Update to reveal.js 4.6.1
Change-Id: I566737c50b93dd8c094ad3c3fa59865260b3b4ba
diff --git a/inst/reveal.js-4.6.1/css/layout.scss b/inst/reveal.js-4.6.1/css/layout.scss
new file mode 100644
index 0000000..f499fdd
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/layout.scss
@@ -0,0 +1,69 @@
+/**
+ * Layout helpers.
+ */
+
+// Stretch an element vertically based on available space
+.reveal .stretch,
+.reveal .r-stretch {
+ max-width: none;
+ max-height: none;
+}
+
+.reveal pre.stretch code,
+.reveal pre.r-stretch code {
+ height: 100%;
+ max-height: 100%;
+ box-sizing: border-box;
+}
+
+// Text that auto-fits its container
+.reveal .r-fit-text {
+ display: inline-block; // https://github.com/rikschennink/fitty#performance
+ white-space: nowrap;
+}
+
+// Stack multiple elements on top of each other
+.reveal .r-stack {
+ display: grid;
+}
+
+.reveal .r-stack > * {
+ grid-area: 1/1;
+ margin: auto;
+}
+
+// Horizontal and vertical stacks
+.reveal .r-vstack,
+.reveal .r-hstack {
+ display: flex;
+
+ img, video {
+ min-width: 0;
+ min-height: 0;
+ object-fit: contain;
+ }
+}
+
+.reveal .r-vstack {
+ flex-direction: column;
+ align-items: center;
+ justify-content: center;
+}
+
+.reveal .r-hstack {
+ flex-direction: row;
+ align-items: center;
+ justify-content: center;
+}
+
+// Naming based on tailwindcss
+.reveal .items-stretch { align-items: stretch; }
+.reveal .items-start { align-items: flex-start; }
+.reveal .items-center { align-items: center; }
+.reveal .items-end { align-items: flex-end; }
+
+.reveal .justify-between { justify-content: space-between; }
+.reveal .justify-around { justify-content: space-around; }
+.reveal .justify-start { justify-content: flex-start; }
+.reveal .justify-center { justify-content: center; }
+.reveal .justify-end { justify-content: flex-end; }
diff --git a/inst/reveal.js-4.6.1/css/print/paper.scss b/inst/reveal.js-4.6.1/css/print/paper.scss
new file mode 100644
index 0000000..32fab8a
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/print/paper.scss
@@ -0,0 +1,166 @@
+
+@media print {
+ html:not(.print-pdf) {
+ overflow: visible;
+ width: auto;
+ height: auto;
+
+ body {
+ margin: 0;
+ padding: 0;
+ overflow: visible;
+ }
+ }
+
+ html:not(.print-pdf) .reveal {
+ background: #fff;
+ font-size: 20pt;
+
+ .controls,
+ .state-background,
+ .progress,
+ .backgrounds,
+ .slide-number {
+ display: none !important;
+ }
+
+ p, td, li {
+ font-size: 20pt!important;
+ color: #000;
+ }
+
+ h1,h2,h3,h4,h5,h6 {
+ color: #000!important;
+ height: auto;
+ line-height: normal;
+ text-align: left;
+ letter-spacing: normal;
+ }
+
+ h1 { font-size: 28pt !important; }
+ h2 { font-size: 24pt !important; }
+ h3 { font-size: 22pt !important; }
+ h4 { font-size: 22pt !important; font-variant: small-caps; }
+ h5 { font-size: 21pt !important; }
+ h6 { font-size: 20pt !important; font-style: italic; }
+
+ a:link,
+ a:visited {
+ color: #000 !important;
+ font-weight: bold;
+ text-decoration: underline;
+ }
+
+ ul, ol, div, p {
+ visibility: visible;
+ position: static;
+ width: auto;
+ height: auto;
+ display: block;
+ overflow: visible;
+ margin: 0;
+ text-align: left !important;
+ }
+ pre,
+ table {
+ margin-left: 0;
+ margin-right: 0;
+ }
+ pre code {
+ padding: 20px;
+ }
+ blockquote {
+ margin: 20px 0;
+ }
+
+ .slides {
+ position: static !important;
+ width: auto !important;
+ height: auto !important;
+
+ left: 0 !important;
+ top: 0 !important;
+ margin-left: 0 !important;
+ margin-top: 0 !important;
+ padding: 0 !important;
+ zoom: 1 !important;
+ transform: none !important;
+
+ overflow: visible !important;
+ display: block !important;
+
+ text-align: left !important;
+ perspective: none;
+
+ perspective-origin: 50% 50%;
+ }
+ .slides section {
+ visibility: visible !important;
+ position: static !important;
+ width: auto !important;
+ height: auto !important;
+ display: block !important;
+ overflow: visible !important;
+
+ left: 0 !important;
+ top: 0 !important;
+ margin-left: 0 !important;
+ margin-top: 0 !important;
+ padding: 60px 20px !important;
+ z-index: auto !important;
+
+ opacity: 1 !important;
+
+ page-break-after: always !important;
+
+ transform-style: flat !important;
+ transform: none !important;
+ transition: none !important;
+ }
+ .slides section.stack {
+ padding: 0 !important;
+ }
+ .slides section:last-of-type {
+ page-break-after: avoid !important;
+ }
+ .slides section .fragment {
+ opacity: 1 !important;
+ visibility: visible !important;
+
+ transform: none !important;
+ }
+
+ .r-fit-text {
+ white-space: normal !important;
+ }
+
+ section img {
+ display: block;
+ margin: 15px 0px;
+ background: rgba(255,255,255,1);
+ border: 1px solid #666;
+ box-shadow: none;
+ }
+
+ section small {
+ font-size: 0.8em;
+ }
+
+ .hljs {
+ max-height: 100%;
+ white-space: pre-wrap;
+ word-wrap: break-word;
+ word-break: break-word;
+ font-size: 15pt;
+ }
+
+ .hljs .hljs-ln-numbers {
+ white-space: nowrap;
+ }
+
+ .hljs td {
+ font-size: inherit !important;
+ color: inherit !important;
+ }
+ }
+}
diff --git a/inst/reveal.js-4.6.1/css/print/pdf.scss b/inst/reveal.js-4.6.1/css/print/pdf.scss
new file mode 100644
index 0000000..308f202
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/print/pdf.scss
@@ -0,0 +1,154 @@
+/**
+ * This stylesheet is used to print reveal.js
+ * presentations to PDF.
+ *
+ * https://revealjs.com/pdf-export/
+ */
+
+html.print-pdf {
+ * {
+ -webkit-print-color-adjust: exact;
+ }
+
+ & {
+ width: 100%;
+ height: 100%;
+ overflow: visible;
+ }
+
+ body {
+ margin: 0 auto !important;
+ border: 0;
+ padding: 0;
+ float: none !important;
+ overflow: visible;
+ }
+
+ /* Remove any elements not needed in print. */
+ .nestedarrow,
+ .reveal .controls,
+ .reveal .progress,
+ .reveal .playback,
+ .reveal.overview,
+ .state-background {
+ display: none !important;
+ }
+
+ .reveal pre code {
+ overflow: hidden !important;
+ }
+
+ .reveal {
+ width: auto !important;
+ height: auto !important;
+ overflow: hidden !important;
+ }
+ .reveal .slides {
+ position: static;
+ width: 100% !important;
+ height: auto !important;
+ zoom: 1 !important;
+ pointer-events: initial;
+
+ left: auto;
+ top: auto;
+ margin: 0 !important;
+ padding: 0 !important;
+
+ overflow: visible;
+ display: block;
+
+ perspective: none;
+ perspective-origin: 50% 50%;
+ }
+
+ .reveal .slides .pdf-page {
+ position: relative;
+ overflow: hidden;
+ z-index: 1;
+
+ page-break-after: always;
+ }
+
+ .reveal .slides section {
+ visibility: visible !important;
+ display: block !important;
+ position: absolute !important;
+
+ margin: 0 !important;
+ padding: 0 !important;
+ box-sizing: border-box !important;
+ min-height: 1px;
+
+ opacity: 1 !important;
+
+ transform-style: flat !important;
+ transform: none !important;
+ }
+
+ .reveal section.stack {
+ position: relative !important;
+ margin: 0 !important;
+ padding: 0 !important;
+ page-break-after: avoid !important;
+ height: auto !important;
+ min-height: auto !important;
+ }
+
+ .reveal img {
+ box-shadow: none;
+ }
+
+ /* Slide backgrounds are placed inside of their slide when exporting to PDF */
+ .reveal .backgrounds {
+ display: none;
+ }
+ .reveal .slide-background {
+ display: block !important;
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ z-index: auto !important;
+ }
+
+ /* Display slide speaker notes when 'showNotes' is enabled */
+ .reveal.show-notes {
+ max-width: none;
+ max-height: none;
+ }
+ .reveal .speaker-notes-pdf {
+ display: block;
+ width: 100%;
+ height: auto;
+ max-height: none;
+ top: auto;
+ right: auto;
+ bottom: auto;
+ left: auto;
+ z-index: 100;
+ }
+
+ /* Layout option which makes notes appear on a separate page */
+ .reveal .speaker-notes-pdf[data-layout="separate-page"] {
+ position: relative;
+ color: inherit;
+ background-color: transparent;
+ padding: 20px;
+ page-break-after: always;
+ border: 0;
+ }
+
+ /* Display slide numbers when 'slideNumber' is enabled */
+ .reveal .slide-number-pdf {
+ display: block;
+ position: absolute;
+ font-size: 14px;
+ }
+
+ /* This accessibility tool is not useful in PDF and breaks it visually */
+ .aria-status {
+ display: none;
+ }
+}
diff --git a/inst/reveal.js-4.6.1/css/reveal.scss b/inst/reveal.js-4.6.1/css/reveal.scss
new file mode 100644
index 0000000..6eb7caa
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/reveal.scss
@@ -0,0 +1,1873 @@
+@use "sass:math";
+
+/**
+ * reveal.js
+ * http://revealjs.com
+ * MIT licensed
+ *
+ * Copyright (C) Hakim El Hattab, https://hakim.se
+ */
+
+@import 'layout';
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+
+html.reveal-full-page {
+ width: 100%;
+ height: 100%;
+ height: 100vh;
+ height: calc( var(--vh, 1vh) * 100 );
+ overflow: hidden;
+}
+
+.reveal-viewport {
+ height: 100%;
+ overflow: hidden;
+ position: relative;
+ line-height: 1;
+ margin: 0;
+
+ background-color: #fff;
+ color: #000;
+}
+
+// Force the presentation to cover the full viewport when we
+// enter fullscreen mode. Fixes sizing issues in Safari.
+.reveal-viewport:fullscreen {
+ top: 0 !important;
+ left: 0 !important;
+ width: 100% !important;
+ height: 100% !important;
+ transform: none !important;
+}
+
+
+/*********************************************
+ * VIEW FRAGMENTS
+ *********************************************/
+
+.reveal .fragment {
+ transition: all .2s ease;
+
+ &:not(.custom) {
+ opacity: 0;
+ visibility: hidden;
+ will-change: opacity;
+ }
+
+ &.visible {
+ opacity: 1;
+ visibility: inherit;
+ }
+
+ &.disabled {
+ transition: none;
+ }
+}
+
+.reveal .fragment.grow {
+ opacity: 1;
+ visibility: inherit;
+
+ &.visible {
+ transform: scale( 1.3 );
+ }
+}
+
+.reveal .fragment.shrink {
+ opacity: 1;
+ visibility: inherit;
+
+ &.visible {
+ transform: scale( 0.7 );
+ }
+}
+
+.reveal .fragment.zoom-in {
+ transform: scale( 0.1 );
+
+ &.visible {
+ transform: none;
+ }
+}
+
+.reveal .fragment.fade-out {
+ opacity: 1;
+ visibility: inherit;
+
+ &.visible {
+ opacity: 0;
+ visibility: hidden;
+ }
+}
+
+.reveal .fragment.semi-fade-out {
+ opacity: 1;
+ visibility: inherit;
+
+ &.visible {
+ opacity: 0.5;
+ visibility: inherit;
+ }
+}
+
+.reveal .fragment.strike {
+ opacity: 1;
+ visibility: inherit;
+
+ &.visible {
+ text-decoration: line-through;
+ }
+}
+
+.reveal .fragment.fade-up {
+ transform: translate(0, 40px);
+
+ &.visible {
+ transform: translate(0, 0);
+ }
+}
+
+.reveal .fragment.fade-down {
+ transform: translate(0, -40px);
+
+ &.visible {
+ transform: translate(0, 0);
+ }
+}
+
+.reveal .fragment.fade-right {
+ transform: translate(-40px, 0);
+
+ &.visible {
+ transform: translate(0, 0);
+ }
+}
+
+.reveal .fragment.fade-left {
+ transform: translate(40px, 0);
+
+ &.visible {
+ transform: translate(0, 0);
+ }
+}
+
+.reveal .fragment.fade-in-then-out,
+.reveal .fragment.current-visible {
+ opacity: 0;
+ visibility: hidden;
+
+ &.current-fragment {
+ opacity: 1;
+ visibility: inherit;
+ }
+}
+
+.reveal .fragment.fade-in-then-semi-out {
+ opacity: 0;
+ visibility: hidden;
+
+ &.visible {
+ opacity: 0.5;
+ visibility: inherit;
+ }
+
+ &.current-fragment {
+ opacity: 1;
+ visibility: inherit;
+ }
+}
+
+.reveal .fragment.highlight-red,
+.reveal .fragment.highlight-current-red,
+.reveal .fragment.highlight-green,
+.reveal .fragment.highlight-current-green,
+.reveal .fragment.highlight-blue,
+.reveal .fragment.highlight-current-blue {
+ opacity: 1;
+ visibility: inherit;
+}
+ .reveal .fragment.highlight-red.visible {
+ color: #ff2c2d
+ }
+ .reveal .fragment.highlight-green.visible {
+ color: #17ff2e;
+ }
+ .reveal .fragment.highlight-blue.visible {
+ color: #1b91ff;
+ }
+
+.reveal .fragment.highlight-current-red.current-fragment {
+ color: #ff2c2d
+}
+.reveal .fragment.highlight-current-green.current-fragment {
+ color: #17ff2e;
+}
+.reveal .fragment.highlight-current-blue.current-fragment {
+ color: #1b91ff;
+}
+
+
+/*********************************************
+ * DEFAULT ELEMENT STYLES
+ *********************************************/
+
+/* Fixes issue in Chrome where italic fonts did not appear when printing to PDF */
+.reveal:after {
+ content: '';
+ font-style: italic;
+}
+
+.reveal iframe {
+ z-index: 1;
+}
+
+/** Prevents layering issues in certain browser/transition combinations */
+.reveal a {
+ position: relative;
+}
+
+
+/*********************************************
+ * CONTROLS
+ *********************************************/
+
+@keyframes bounce-right {
+ 0%, 10%, 25%, 40%, 50% {transform: translateX(0);}
+ 20% {transform: translateX(10px);}
+ 30% {transform: translateX(-5px);}
+}
+
+@keyframes bounce-left {
+ 0%, 10%, 25%, 40%, 50% {transform: translateX(0);}
+ 20% {transform: translateX(-10px);}
+ 30% {transform: translateX(5px);}
+}
+
+@keyframes bounce-down {
+ 0%, 10%, 25%, 40%, 50% {transform: translateY(0);}
+ 20% {transform: translateY(10px);}
+ 30% {transform: translateY(-5px);}
+}
+
+$controlArrowSize: 3.6em;
+$controlArrowSpacing: 1.4em;
+$controlArrowLength: 2.6em;
+$controlArrowThickness: 0.5em;
+$controlsArrowAngle: 45deg;
+$controlsArrowAngleHover: 40deg;
+$controlsArrowAngleActive: 36deg;
+
+@mixin controlsArrowTransform( $angle ) {
+ &:before {
+ transform: translateX(($controlArrowSize - $controlArrowLength)*0.5) translateY(($controlArrowSize - $controlArrowThickness)*0.5) rotate( $angle );
+ }
+
+ &:after {
+ transform: translateX(($controlArrowSize - $controlArrowLength)*0.5) translateY(($controlArrowSize - $controlArrowThickness)*0.5) rotate( -$angle );
+ }
+}
+
+.reveal .controls {
+ $spacing: 12px;
+
+ display: none;
+ position: absolute;
+ top: auto;
+ bottom: $spacing;
+ right: $spacing;
+ left: auto;
+ z-index: 11;
+ color: #000;
+ pointer-events: none;
+ font-size: 10px;
+
+ button {
+ position: absolute;
+ padding: 0;
+ background-color: transparent;
+ border: 0;
+ outline: 0;
+ cursor: pointer;
+ color: currentColor;
+ transform: scale(.9999);
+ transition: color 0.2s ease,
+ opacity 0.2s ease,
+ transform 0.2s ease;
+ z-index: 2; // above slides
+ pointer-events: auto;
+ font-size: inherit;
+
+ visibility: hidden;
+ opacity: 0;
+
+ -webkit-appearance: none;
+ -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
+ }
+
+ .controls-arrow:before,
+ .controls-arrow:after {
+ content: '';
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: $controlArrowLength;
+ height: $controlArrowThickness;
+ border-radius: $controlArrowThickness*0.5;
+ background-color: currentColor;
+
+ transition: all 0.15s ease, background-color 0.8s ease;
+ transform-origin: math.div(floor(($controlArrowThickness*0.5)*10), 10) 50%;
+ will-change: transform;
+ }
+
+ .controls-arrow {
+ position: relative;
+ width: $controlArrowSize;
+ height: $controlArrowSize;
+
+ @include controlsArrowTransform( $controlsArrowAngle );
+
+ &:hover {
+ @include controlsArrowTransform( $controlsArrowAngleHover );
+ }
+
+ &:active {
+ @include controlsArrowTransform( $controlsArrowAngleActive );
+ }
+ }
+
+ .navigate-left {
+ right: $controlArrowSize + $controlArrowSpacing*2;
+ bottom: $controlArrowSpacing + $controlArrowSize*0.5;
+ transform: translateX( -10px );
+
+ &.highlight {
+ animation: bounce-left 2s 50 both ease-out;
+ }
+ }
+
+ .navigate-right {
+ right: 0;
+ bottom: $controlArrowSpacing + $controlArrowSize*0.5;
+ transform: translateX( 10px );
+
+ .controls-arrow {
+ transform: rotate( 180deg );
+ }
+
+ &.highlight {
+ animation: bounce-right 2s 50 both ease-out;
+ }
+ }
+
+ .navigate-up {
+ right: $controlArrowSpacing + $controlArrowSize*0.5;
+ bottom: $controlArrowSpacing*2 + $controlArrowSize;
+ transform: translateY( -10px );
+
+ .controls-arrow {
+ transform: rotate( 90deg );
+ }
+ }
+
+ .navigate-down {
+ right: $controlArrowSpacing + $controlArrowSize*0.5;
+ bottom: -$controlArrowSpacing;
+ padding-bottom: $controlArrowSpacing;
+ transform: translateY( 10px );
+
+ .controls-arrow {
+ transform: rotate( -90deg );
+ }
+
+ &.highlight {
+ animation: bounce-down 2s 50 both ease-out;
+ }
+ }
+
+ // Back arrow style: "faded":
+ // Deemphasize backwards navigation arrows in favor of drawing
+ // attention to forwards navigation
+ &[data-controls-back-arrows="faded"] .navigate-up.enabled {
+ opacity: 0.3;
+
+ &:hover {
+ opacity: 1;
+ }
+ }
+
+ // Back arrow style: "hidden":
+ // Never show arrows for backwards navigation
+ &[data-controls-back-arrows="hidden"] .navigate-up.enabled {
+ opacity: 0;
+ visibility: hidden;
+ }
+
+ // Any control button that can be clicked is "enabled"
+ .enabled {
+ visibility: visible;
+ opacity: 0.9;
+ cursor: pointer;
+ transform: none;
+ }
+
+ // Any control button that leads to showing or hiding
+ // a fragment
+ .enabled.fragmented {
+ opacity: 0.5;
+ }
+
+ .enabled:hover,
+ .enabled.fragmented:hover {
+ opacity: 1;
+ }
+}
+
+.reveal:not(.rtl) .controls {
+ // Back arrow style: "faded":
+ // Deemphasize left arrow
+ &[data-controls-back-arrows="faded"] .navigate-left.enabled {
+ opacity: 0.3;
+
+ &:hover {
+ opacity: 1;
+ }
+ }
+
+ // Back arrow style: "hidden":
+ // Never show left arrow
+ &[data-controls-back-arrows="hidden"] .navigate-left.enabled {
+ opacity: 0;
+ visibility: hidden;
+ }
+}
+
+.reveal.rtl .controls {
+ // Back arrow style: "faded":
+ // Deemphasize right arrow in RTL mode
+ &[data-controls-back-arrows="faded"] .navigate-right.enabled {
+ opacity: 0.3;
+
+ &:hover {
+ opacity: 1;
+ }
+ }
+
+ // Back arrow style: "hidden":
+ // Never show right arrow in RTL mode
+ &[data-controls-back-arrows="hidden"] .navigate-right.enabled {
+ opacity: 0;
+ visibility: hidden;
+ }
+}
+
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-up,
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-down {
+ display: none;
+}
+
+// Adjust the layout when there are no vertical slides
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-left,
+.reveal:not(.has-vertical-slides) .controls .navigate-left {
+ bottom: $controlArrowSpacing;
+ right: 0.5em + $controlArrowSpacing + $controlArrowSize;
+}
+
+.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-right,
+.reveal:not(.has-vertical-slides) .controls .navigate-right {
+ bottom: $controlArrowSpacing;
+ right: 0.5em;
+}
+
+// Adjust the layout when there are no horizontal slides
+.reveal:not(.has-horizontal-slides) .controls .navigate-up {
+ right: $controlArrowSpacing;
+ bottom: $controlArrowSpacing + $controlArrowSize;
+}
+.reveal:not(.has-horizontal-slides) .controls .navigate-down {
+ right: $controlArrowSpacing;
+ bottom: 0.5em;
+}
+
+// Invert arrows based on background color
+.reveal.has-dark-background .controls {
+ color: #fff;
+}
+.reveal.has-light-background .controls {
+ color: #000;
+}
+
+// Disable active states on touch devices
+.reveal.no-hover .controls .controls-arrow:hover,
+.reveal.no-hover .controls .controls-arrow:active {
+ @include controlsArrowTransform( $controlsArrowAngle );
+}
+
+// Edge aligned controls layout
+@media screen and (min-width: 500px) {
+
+ $spacing: 0.8em;
+
+ .reveal .controls[data-controls-layout="edges"] {
+ & {
+ top: 0;
+ right: 0;
+ bottom: 0;
+ left: 0;
+ }
+
+ .navigate-left,
+ .navigate-right,
+ .navigate-up,
+ .navigate-down {
+ bottom: auto;
+ right: auto;
+ }
+
+ .navigate-left {
+ top: 50%;
+ left: $spacing;
+ margin-top: -$controlArrowSize*0.5;
+ }
+
+ .navigate-right {
+ top: 50%;
+ right: $spacing;
+ margin-top: -$controlArrowSize*0.5;
+ }
+
+ .navigate-up {
+ top: $spacing;
+ left: 50%;
+ margin-left: -$controlArrowSize*0.5;
+ }
+
+ .navigate-down {
+ bottom: $spacing - $controlArrowSpacing + 0.3em;
+ left: 50%;
+ margin-left: -$controlArrowSize*0.5;
+ }
+ }
+
+}
+
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+
+.reveal .progress {
+ position: absolute;
+ display: none;
+ height: 3px;
+ width: 100%;
+ bottom: 0;
+ left: 0;
+ z-index: 10;
+
+ background-color: rgba( 0, 0, 0, 0.2 );
+ color: #fff;
+}
+ .reveal .progress:after {
+ content: '';
+ display: block;
+ position: absolute;
+ height: 10px;
+ width: 100%;
+ top: -10px;
+ }
+ .reveal .progress span {
+ display: block;
+ height: 100%;
+ width: 100%;
+
+ background-color: currentColor;
+ transition: transform 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
+ transform-origin: 0 0;
+ transform: scaleX(0);
+ }
+
+/*********************************************
+ * SLIDE NUMBER
+ *********************************************/
+
+.reveal .slide-number {
+ position: absolute;
+ display: block;
+ right: 8px;
+ bottom: 8px;
+ z-index: 31;
+ font-family: Helvetica, sans-serif;
+ font-size: 12px;
+ line-height: 1;
+ color: #fff;
+ background-color: rgba( 0, 0, 0, 0.4 );
+ padding: 5px;
+}
+
+.reveal .slide-number a {
+ color: currentColor;
+}
+
+.reveal .slide-number-delimiter {
+ margin: 0 3px;
+}
+
+/*********************************************
+ * SLIDES
+ *********************************************/
+
+.reveal {
+ position: relative;
+ width: 100%;
+ height: 100%;
+ overflow: hidden;
+ touch-action: pinch-zoom;
+}
+
+// Swiping on an embedded deck should not block page scrolling
+.reveal.embedded {
+ touch-action: pan-y;
+}
+
+.reveal .slides {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ top: 0;
+ right: 0;
+ bottom: 0;
+ left: 0;
+ margin: auto;
+ pointer-events: none;
+
+ overflow: visible;
+ z-index: 1;
+ text-align: center;
+ perspective: 600px;
+ perspective-origin: 50% 40%;
+}
+
+.reveal .slides>section {
+ perspective: 600px;
+}
+
+.reveal .slides>section,
+.reveal .slides>section>section {
+ display: none;
+ position: absolute;
+ width: 100%;
+ pointer-events: auto;
+
+ z-index: 10;
+ transform-style: flat;
+ transition: transform-origin 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985),
+ transform 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985),
+ visibility 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985),
+ opacity 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
+}
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"] .slides section {
+ transition-duration: 400ms;
+}
+.reveal[data-transition-speed="slow"] .slides section {
+ transition-duration: 1200ms;
+}
+
+/* Slide-specific transition speed overrides */
+.reveal .slides section[data-transition-speed="fast"] {
+ transition-duration: 400ms;
+}
+.reveal .slides section[data-transition-speed="slow"] {
+ transition-duration: 1200ms;
+}
+
+.reveal .slides>section.stack {
+ padding-top: 0;
+ padding-bottom: 0;
+ pointer-events: none;
+ height: 100%;
+}
+
+.reveal .slides>section.present,
+.reveal .slides>section>section.present {
+ display: block;
+ z-index: 11;
+ opacity: 1;
+}
+
+.reveal .slides>section:empty,
+.reveal .slides>section>section:empty,
+.reveal .slides>section[data-background-interactive],
+.reveal .slides>section>section[data-background-interactive] {
+ pointer-events: none;
+}
+
+.reveal.center,
+.reveal.center .slides,
+.reveal.center .slides section {
+ min-height: 0 !important;
+}
+
+/* Don't allow interaction with invisible slides */
+.reveal .slides>section:not(.present),
+.reveal .slides>section>section:not(.present) {
+ pointer-events: none;
+}
+
+.reveal.overview .slides>section,
+.reveal.overview .slides>section>section {
+ pointer-events: auto;
+}
+
+.reveal .slides>section.past,
+.reveal .slides>section.future,
+.reveal .slides>section.past>section,
+.reveal .slides>section.future>section,
+.reveal .slides>section>section.past,
+.reveal .slides>section>section.future {
+ opacity: 0;
+}
+
+
+/*********************************************
+ * Mixins for readability of transitions
+ *********************************************/
+
+@mixin transition-global($style) {
+ .reveal .slides section[data-transition=#{$style}],
+ .reveal.#{$style} .slides section:not([data-transition]) {
+ @content;
+ }
+}
+@mixin transition-stack($style) {
+ .reveal .slides section[data-transition=#{$style}].stack,
+ .reveal.#{$style} .slides section.stack {
+ @content;
+ }
+}
+@mixin transition-horizontal-past($style) {
+ .reveal .slides>section[data-transition=#{$style}].past,
+ .reveal .slides>section[data-transition~=#{$style}-out].past,
+ .reveal.#{$style} .slides>section:not([data-transition]).past {
+ @content;
+ }
+}
+@mixin transition-horizontal-future($style) {
+ .reveal .slides>section[data-transition=#{$style}].future,
+ .reveal .slides>section[data-transition~=#{$style}-in].future,
+ .reveal.#{$style} .slides>section:not([data-transition]).future {
+ @content;
+ }
+}
+
+@mixin transition-vertical-past($style) {
+ .reveal .slides>section>section[data-transition=#{$style}].past,
+ .reveal .slides>section>section[data-transition~=#{$style}-out].past,
+ .reveal.#{$style} .slides>section>section:not([data-transition]).past {
+ @content;
+ }
+}
+@mixin transition-vertical-future($style) {
+ .reveal .slides>section>section[data-transition=#{$style}].future,
+ .reveal .slides>section>section[data-transition~=#{$style}-in].future,
+ .reveal.#{$style} .slides>section>section:not([data-transition]).future {
+ @content;
+ }
+}
+
+/*********************************************
+ * SLIDE TRANSITION
+ * Aliased 'linear' for backwards compatibility
+ *********************************************/
+
+@each $stylename in slide, linear {
+ @include transition-horizontal-past(#{$stylename}) {
+ transform: translate(-150%, 0);
+ }
+ @include transition-horizontal-future(#{$stylename}) {
+ transform: translate(150%, 0);
+ }
+ @include transition-vertical-past(#{$stylename}) {
+ transform: translate(0, -150%);
+ }
+ @include transition-vertical-future(#{$stylename}) {
+ transform: translate(0, 150%);
+ }
+}
+
+/*********************************************
+ * CONVEX TRANSITION
+ * Aliased 'default' for backwards compatibility
+ *********************************************/
+
+@each $stylename in default, convex {
+ @include transition-stack(#{$stylename}) {
+ transform-style: preserve-3d;
+ }
+
+ @include transition-horizontal-past(#{$stylename}) {
+ transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
+ }
+ @include transition-horizontal-future(#{$stylename}) {
+ transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
+ }
+ @include transition-vertical-past(#{$stylename}) {
+ transform: translate3d(0, -300px, 0) rotateX(70deg) translate3d(0, -300px, 0);
+ }
+ @include transition-vertical-future(#{$stylename}) {
+ transform: translate3d(0, 300px, 0) rotateX(-70deg) translate3d(0, 300px, 0);
+ }
+}
+
+/*********************************************
+ * CONCAVE TRANSITION
+ *********************************************/
+
+@include transition-stack(concave) {
+ transform-style: preserve-3d;
+}
+
+@include transition-horizontal-past(concave) {
+ transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
+}
+@include transition-horizontal-future(concave) {
+ transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
+}
+@include transition-vertical-past(concave) {
+ transform: translate3d(0, -80%, 0) rotateX(-70deg) translate3d(0, -80%, 0);
+}
+@include transition-vertical-future(concave) {
+ transform: translate3d(0, 80%, 0) rotateX(70deg) translate3d(0, 80%, 0);
+}
+
+
+/*********************************************
+ * ZOOM TRANSITION
+ *********************************************/
+
+@include transition-global(zoom) {
+ transition-timing-function: ease;
+}
+@include transition-horizontal-past(zoom) {
+ visibility: hidden;
+ transform: scale(16);
+}
+@include transition-horizontal-future(zoom) {
+ visibility: hidden;
+ transform: scale(0.2);
+}
+@include transition-vertical-past(zoom) {
+ transform: scale(16);
+}
+@include transition-vertical-future(zoom) {
+ transform: scale(0.2);
+}
+
+
+/*********************************************
+ * CUBE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+
+.reveal.cube .slides {
+ perspective: 1300px;
+}
+
+.reveal.cube .slides section {
+ padding: 30px;
+ min-height: 700px;
+ backface-visibility: hidden;
+ box-sizing: border-box;
+ transform-style: preserve-3d;
+}
+ .reveal.center.cube .slides section {
+ min-height: 0;
+ }
+ .reveal.cube .slides section:not(.stack):before {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 100%;
+ height: 100%;
+ left: 0;
+ top: 0;
+ background: rgba(0,0,0,0.1);
+ border-radius: 4px;
+ transform: translateZ( -20px );
+ }
+ .reveal.cube .slides section:not(.stack):after {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 90%;
+ height: 30px;
+ left: 5%;
+ bottom: 0;
+ background: none;
+ z-index: 1;
+
+ border-radius: 4px;
+ box-shadow: 0px 95px 25px rgba(0,0,0,0.2);
+ transform: translateZ(-90px) rotateX( 65deg );
+ }
+
+.reveal.cube .slides>section.stack {
+ padding: 0;
+ background: none;
+}
+
+.reveal.cube .slides>section.past {
+ transform-origin: 100% 0%;
+ transform: translate3d(-100%, 0, 0) rotateY(-90deg);
+}
+
+.reveal.cube .slides>section.future {
+ transform-origin: 0% 0%;
+ transform: translate3d(100%, 0, 0) rotateY(90deg);
+}
+
+.reveal.cube .slides>section>section.past {
+ transform-origin: 0% 100%;
+ transform: translate3d(0, -100%, 0) rotateX(90deg);
+}
+
+.reveal.cube .slides>section>section.future {
+ transform-origin: 0% 0%;
+ transform: translate3d(0, 100%, 0) rotateX(-90deg);
+}
+
+
+/*********************************************
+ * PAGE TRANSITION
+ *
+ * WARNING:
+ * this is deprecated and will be removed in a
+ * future version.
+ *********************************************/
+
+.reveal.page .slides {
+ perspective-origin: 0% 50%;
+ perspective: 3000px;
+}
+
+.reveal.page .slides section {
+ padding: 30px;
+ min-height: 700px;
+ box-sizing: border-box;
+ transform-style: preserve-3d;
+}
+ .reveal.page .slides section.past {
+ z-index: 12;
+ }
+ .reveal.page .slides section:not(.stack):before {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 100%;
+ height: 100%;
+ left: 0;
+ top: 0;
+ background: rgba(0,0,0,0.1);
+ transform: translateZ( -20px );
+ }
+ .reveal.page .slides section:not(.stack):after {
+ content: '';
+ position: absolute;
+ display: block;
+ width: 90%;
+ height: 30px;
+ left: 5%;
+ bottom: 0;
+ background: none;
+ z-index: 1;
+
+ border-radius: 4px;
+ box-shadow: 0px 95px 25px rgba(0,0,0,0.2);
+
+ -webkit-transform: translateZ(-90px) rotateX( 65deg );
+ }
+
+.reveal.page .slides>section.stack {
+ padding: 0;
+ background: none;
+}
+
+.reveal.page .slides>section.past {
+ transform-origin: 0% 0%;
+ transform: translate3d(-40%, 0, 0) rotateY(-80deg);
+}
+
+.reveal.page .slides>section.future {
+ transform-origin: 100% 0%;
+ transform: translate3d(0, 0, 0);
+}
+
+.reveal.page .slides>section>section.past {
+ transform-origin: 0% 0%;
+ transform: translate3d(0, -40%, 0) rotateX(80deg);
+}
+
+.reveal.page .slides>section>section.future {
+ transform-origin: 0% 100%;
+ transform: translate3d(0, 0, 0);
+}
+
+
+/*********************************************
+ * FADE TRANSITION
+ *********************************************/
+
+.reveal .slides section[data-transition=fade],
+.reveal.fade .slides section:not([data-transition]),
+.reveal.fade .slides>section>section:not([data-transition]) {
+ transform: none;
+ transition: opacity 0.5s;
+}
+
+
+.reveal.fade.overview .slides section,
+.reveal.fade.overview .slides>section>section {
+ transition: none;
+}
+
+
+/*********************************************
+ * NO TRANSITION
+ *********************************************/
+
+@include transition-global(none) {
+ transform: none;
+ transition: none;
+}
+
+
+/*********************************************
+ * PAUSED MODE
+ *********************************************/
+
+.reveal .pause-overlay {
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ background: black;
+ visibility: hidden;
+ opacity: 0;
+ z-index: 100;
+ transition: all 1s ease;
+}
+
+.reveal .pause-overlay .resume-button {
+ position: absolute;
+ bottom: 20px;
+ right: 20px;
+ color: #ccc;
+ border-radius: 2px;
+ padding: 6px 14px;
+ border: 2px solid #ccc;
+ font-size: 16px;
+ background: transparent;
+ cursor: pointer;
+
+ &:hover {
+ color: #fff;
+ border-color: #fff;
+ }
+}
+
+.reveal.paused .pause-overlay {
+ visibility: visible;
+ opacity: 1;
+}
+
+
+/*********************************************
+ * FALLBACK
+ *********************************************/
+
+.reveal .no-transition,
+.reveal .no-transition *,
+.reveal .slides.disable-slide-transitions section {
+ transition: none !important;
+}
+
+.reveal .slides.disable-slide-transitions section {
+ transform: none !important;
+}
+
+
+/*********************************************
+ * PER-SLIDE BACKGROUNDS
+ *********************************************/
+
+.reveal .backgrounds {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ top: 0;
+ left: 0;
+ perspective: 600px;
+}
+ .reveal .slide-background {
+ display: none;
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ opacity: 0;
+ visibility: hidden;
+ overflow: hidden;
+
+ background-color: rgba( 0, 0, 0, 0 );
+
+ transition: all 800ms cubic-bezier(0.260, 0.860, 0.440, 0.985);
+ }
+
+ .reveal .slide-background-content {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+
+ background-position: 50% 50%;
+ background-repeat: no-repeat;
+ background-size: cover;
+ }
+
+ .reveal .slide-background.stack {
+ display: block;
+ }
+
+ .reveal .slide-background.present {
+ opacity: 1;
+ visibility: visible;
+ z-index: 2;
+ }
+
+ .print-pdf .reveal .slide-background {
+ opacity: 1 !important;
+ visibility: visible !important;
+ }
+
+/* Video backgrounds */
+.reveal .slide-background video {
+ position: absolute;
+ width: 100%;
+ height: 100%;
+ max-width: none;
+ max-height: none;
+ top: 0;
+ left: 0;
+ object-fit: cover;
+}
+ .reveal .slide-background[data-background-size="contain"] video {
+ object-fit: contain;
+ }
+
+/* Immediate transition style */
+.reveal[data-background-transition=none]>.backgrounds .slide-background:not([data-background-transition]),
+.reveal>.backgrounds .slide-background[data-background-transition=none] {
+ transition: none;
+}
+
+/* Slide */
+.reveal[data-background-transition=slide]>.backgrounds .slide-background:not([data-background-transition]),
+.reveal>.backgrounds .slide-background[data-background-transition=slide] {
+ opacity: 1;
+}
+ .reveal[data-background-transition=slide]>.backgrounds .slide-background.past:not([data-background-transition]),
+ .reveal>.backgrounds .slide-background.past[data-background-transition=slide] {
+ transform: translate(-100%, 0);
+ }
+ .reveal[data-background-transition=slide]>.backgrounds .slide-background.future:not([data-background-transition]),
+ .reveal>.backgrounds .slide-background.future[data-background-transition=slide] {
+ transform: translate(100%, 0);
+ }
+
+ .reveal[data-background-transition=slide]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
+ .reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=slide] {
+ transform: translate(0, -100%);
+ }
+ .reveal[data-background-transition=slide]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
+ .reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=slide] {
+ transform: translate(0, 100%);
+ }
+
+
+/* Convex */
+.reveal[data-background-transition=convex]>.backgrounds .slide-background.past:not([data-background-transition]),
+.reveal>.backgrounds .slide-background.past[data-background-transition=convex] {
+ opacity: 0;
+ transform: translate3d(-100%, 0, 0) rotateY(-90deg) translate3d(-100%, 0, 0);
+}
+.reveal[data-background-transition=convex]>.backgrounds .slide-background.future:not([data-background-transition]),
+.reveal>.backgrounds .slide-background.future[data-background-transition=convex] {
+ opacity: 0;
+ transform: translate3d(100%, 0, 0) rotateY(90deg) translate3d(100%, 0, 0);
+}
+
+.reveal[data-background-transition=convex]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
+.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=convex] {
+ opacity: 0;
+ transform: translate3d(0, -100%, 0) rotateX(90deg) translate3d(0, -100%, 0);
+}
+.reveal[data-background-transition=convex]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
+.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=convex] {
+ opacity: 0;
+ transform: translate3d(0, 100%, 0) rotateX(-90deg) translate3d(0, 100%, 0);
+}
+
+
+/* Concave */
+.reveal[data-background-transition=concave]>.backgrounds .slide-background.past:not([data-background-transition]),
+.reveal>.backgrounds .slide-background.past[data-background-transition=concave] {
+ opacity: 0;
+ transform: translate3d(-100%, 0, 0) rotateY(90deg) translate3d(-100%, 0, 0);
+}
+.reveal[data-background-transition=concave]>.backgrounds .slide-background.future:not([data-background-transition]),
+.reveal>.backgrounds .slide-background.future[data-background-transition=concave] {
+ opacity: 0;
+ transform: translate3d(100%, 0, 0) rotateY(-90deg) translate3d(100%, 0, 0);
+}
+
+.reveal[data-background-transition=concave]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
+.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=concave] {
+ opacity: 0;
+ transform: translate3d(0, -100%, 0) rotateX(-90deg) translate3d(0, -100%, 0);
+}
+.reveal[data-background-transition=concave]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
+.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=concave] {
+ opacity: 0;
+ transform: translate3d(0, 100%, 0) rotateX(90deg) translate3d(0, 100%, 0);
+}
+
+/* Zoom */
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background:not([data-background-transition]),
+.reveal>.backgrounds .slide-background[data-background-transition=zoom] {
+ transition-timing-function: ease;
+}
+
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background.past:not([data-background-transition]),
+.reveal>.backgrounds .slide-background.past[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ transform: scale(16);
+}
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background.future:not([data-background-transition]),
+.reveal>.backgrounds .slide-background.future[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ transform: scale(0.2);
+}
+
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background>.slide-background.past:not([data-background-transition]),
+.reveal>.backgrounds .slide-background>.slide-background.past[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ transform: scale(16);
+}
+.reveal[data-background-transition=zoom]>.backgrounds .slide-background>.slide-background.future:not([data-background-transition]),
+.reveal>.backgrounds .slide-background>.slide-background.future[data-background-transition=zoom] {
+ opacity: 0;
+ visibility: hidden;
+ transform: scale(0.2);
+}
+
+
+/* Global transition speed settings */
+.reveal[data-transition-speed="fast"]>.backgrounds .slide-background {
+ transition-duration: 400ms;
+}
+.reveal[data-transition-speed="slow"]>.backgrounds .slide-background {
+ transition-duration: 1200ms;
+}
+
+
+/*********************************************
+ * AUTO ANIMATE
+ *********************************************/
+
+.reveal [data-auto-animate-target^="unmatched"] {
+ will-change: opacity;
+}
+
+.reveal section[data-auto-animate]:not(.stack):not([data-auto-animate="running"]) [data-auto-animate-target^="unmatched"] {
+ opacity: 0;
+}
+
+
+/*********************************************
+ * OVERVIEW
+ *********************************************/
+
+.reveal.overview {
+ perspective-origin: 50% 50%;
+ perspective: 700px;
+
+ .slides {
+ // Fixes overview rendering errors in FF48+, not applied to
+ // other browsers since it degrades performance
+ -moz-transform-style: preserve-3d;
+ }
+
+ .slides section {
+ height: 100%;
+ top: 0 !important;
+ opacity: 1 !important;
+ overflow: hidden;
+ visibility: visible !important;
+ cursor: pointer;
+ box-sizing: border-box;
+ }
+ .slides section:hover,
+ .slides section.present {
+ outline: 10px solid rgba(150,150,150,0.4);
+ outline-offset: 10px;
+ }
+ .slides section .fragment {
+ opacity: 1;
+ transition: none;
+ }
+ .slides section:after,
+ .slides section:before {
+ display: none !important;
+ }
+ .slides>section.stack {
+ padding: 0;
+ top: 0 !important;
+ background: none;
+ outline: none;
+ overflow: visible;
+ }
+
+ .backgrounds {
+ perspective: inherit;
+
+ // Fixes overview rendering errors in FF48+, not applied to
+ // other browsers since it degrades performance
+ -moz-transform-style: preserve-3d;
+ }
+
+ .backgrounds .slide-background {
+ opacity: 1;
+ visibility: visible;
+
+ // This can't be applied to the slide itself in Safari
+ outline: 10px solid rgba(150,150,150,0.1);
+ outline-offset: 10px;
+ }
+
+ .backgrounds .slide-background.stack {
+ overflow: visible;
+ }
+}
+
+// Disable transitions transitions while we're activating
+// or deactivating the overview mode.
+.reveal.overview .slides section,
+.reveal.overview-deactivating .slides section {
+ transition: none;
+}
+
+.reveal.overview .backgrounds .slide-background,
+.reveal.overview-deactivating .backgrounds .slide-background {
+ transition: none;
+}
+
+
+/*********************************************
+ * RTL SUPPORT
+ *********************************************/
+
+.reveal.rtl .slides,
+.reveal.rtl .slides h1,
+.reveal.rtl .slides h2,
+.reveal.rtl .slides h3,
+.reveal.rtl .slides h4,
+.reveal.rtl .slides h5,
+.reveal.rtl .slides h6 {
+ direction: rtl;
+ font-family: sans-serif;
+}
+
+.reveal.rtl pre,
+.reveal.rtl code {
+ direction: ltr;
+}
+
+.reveal.rtl ol,
+.reveal.rtl ul {
+ text-align: right;
+}
+
+.reveal.rtl .progress span {
+ transform-origin: 100% 0;
+}
+
+/*********************************************
+ * PARALLAX BACKGROUND
+ *********************************************/
+
+.reveal.has-parallax-background .backgrounds {
+ transition: all 0.8s ease;
+}
+
+/* Global transition speed settings */
+.reveal.has-parallax-background[data-transition-speed="fast"] .backgrounds {
+ transition-duration: 400ms;
+}
+.reveal.has-parallax-background[data-transition-speed="slow"] .backgrounds {
+ transition-duration: 1200ms;
+}
+
+
+/*********************************************
+ * OVERLAY FOR LINK PREVIEWS AND HELP
+ *********************************************/
+
+$overlayHeaderHeight: 40px;
+$overlayHeaderPadding: 5px;
+
+.reveal > .overlay {
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ z-index: 1000;
+ background: rgba( 0, 0, 0, 0.9 );
+ transition: all 0.3s ease;
+}
+
+ .reveal > .overlay .spinner {
+ position: absolute;
+ display: block;
+ top: 50%;
+ left: 50%;
+ width: 32px;
+ height: 32px;
+ margin: -16px 0 0 -16px;
+ z-index: 10;
+ background-image: url(data:image/gif;base64,R0lGODlhIAAgAPMAAJmZmf%2F%2F%2F6%2Bvr8nJybW1tcDAwOjo6Nvb26ioqKOjo7Ozs%2FLy8vz8%2FAAAAAAAAAAAACH%2FC05FVFNDQVBFMi4wAwEAAAAh%2FhpDcmVhdGVkIHdpdGggYWpheGxvYWQuaW5mbwAh%2BQQJCgAAACwAAAAAIAAgAAAE5xDISWlhperN52JLhSSdRgwVo1ICQZRUsiwHpTJT4iowNS8vyW2icCF6k8HMMBkCEDskxTBDAZwuAkkqIfxIQyhBQBFvAQSDITM5VDW6XNE4KagNh6Bgwe60smQUB3d4Rz1ZBApnFASDd0hihh12BkE9kjAJVlycXIg7CQIFA6SlnJ87paqbSKiKoqusnbMdmDC2tXQlkUhziYtyWTxIfy6BE8WJt5YJvpJivxNaGmLHT0VnOgSYf0dZXS7APdpB309RnHOG5gDqXGLDaC457D1zZ%2FV%2FnmOM82XiHRLYKhKP1oZmADdEAAAh%2BQQJCgAAACwAAAAAIAAgAAAE6hDISWlZpOrNp1lGNRSdRpDUolIGw5RUYhhHukqFu8DsrEyqnWThGvAmhVlteBvojpTDDBUEIFwMFBRAmBkSgOrBFZogCASwBDEY%2FCZSg7GSE0gSCjQBMVG023xWBhklAnoEdhQEfyNqMIcKjhRsjEdnezB%2BA4k8gTwJhFuiW4dokXiloUepBAp5qaKpp6%2BHo7aWW54wl7obvEe0kRuoplCGepwSx2jJvqHEmGt6whJpGpfJCHmOoNHKaHx61WiSR92E4lbFoq%2BB6QDtuetcaBPnW6%2BO7wDHpIiK9SaVK5GgV543tzjgGcghAgAh%2BQQJCgAAACwAAAAAIAAgAAAE7hDISSkxpOrN5zFHNWRdhSiVoVLHspRUMoyUakyEe8PTPCATW9A14E0UvuAKMNAZKYUZCiBMuBakSQKG8G2FzUWox2AUtAQFcBKlVQoLgQReZhQlCIJesQXI5B0CBnUMOxMCenoCfTCEWBsJColTMANldx15BGs8B5wlCZ9Po6OJkwmRpnqkqnuSrayqfKmqpLajoiW5HJq7FL1Gr2mMMcKUMIiJgIemy7xZtJsTmsM4xHiKv5KMCXqfyUCJEonXPN2rAOIAmsfB3uPoAK%2B%2BG%2Bw48edZPK%2BM6hLJpQg484enXIdQFSS1u6UhksENEQAAIfkECQoAAAAsAAAAACAAIAAABOcQyEmpGKLqzWcZRVUQnZYg1aBSh2GUVEIQ2aQOE%2BG%2BcD4ntpWkZQj1JIiZIogDFFyHI0UxQwFugMSOFIPJftfVAEoZLBbcLEFhlQiqGp1Vd140AUklUN3eCA51C1EWMzMCezCBBmkxVIVHBWd3HHl9JQOIJSdSnJ0TDKChCwUJjoWMPaGqDKannasMo6WnM562R5YluZRwur0wpgqZE7NKUm%2BFNRPIhjBJxKZteWuIBMN4zRMIVIhffcgojwCF117i4nlLnY5ztRLsnOk%2BaV%2BoJY7V7m76PdkS4trKcdg0Zc0tTcKkRAAAIfkECQoAAAAsAAAAACAAIAAABO4QyEkpKqjqzScpRaVkXZWQEximw1BSCUEIlDohrft6cpKCk5xid5MNJTaAIkekKGQkWyKHkvhKsR7ARmitkAYDYRIbUQRQjWBwJRzChi9CRlBcY1UN4g0%2FVNB0AlcvcAYHRyZPdEQFYV8ccwR5HWxEJ02YmRMLnJ1xCYp0Y5idpQuhopmmC2KgojKasUQDk5BNAwwMOh2RtRq5uQuPZKGIJQIGwAwGf6I0JXMpC8C7kXWDBINFMxS4DKMAWVWAGYsAdNqW5uaRxkSKJOZKaU3tPOBZ4DuK2LATgJhkPJMgTwKCdFjyPHEnKxFCDhEAACH5BAkKAAAALAAAAAAgACAAAATzEMhJaVKp6s2nIkolIJ2WkBShpkVRWqqQrhLSEu9MZJKK9y1ZrqYK9WiClmvoUaF8gIQSNeF1Er4MNFn4SRSDARWroAIETg1iVwuHjYB1kYc1mwruwXKC9gmsJXliGxc%2BXiUCby9ydh1sOSdMkpMTBpaXBzsfhoc5l58Gm5yToAaZhaOUqjkDgCWNHAULCwOLaTmzswadEqggQwgHuQsHIoZCHQMMQgQGubVEcxOPFAcMDAYUA85eWARmfSRQCdcMe0zeP1AAygwLlJtPNAAL19DARdPzBOWSm1brJBi45soRAWQAAkrQIykShQ9wVhHCwCQCACH5BAkKAAAALAAAAAAgACAAAATrEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiRMDjI0Fd30%2FiI2UA5GSS5UDj2l6NoqgOgN4gksEBgYFf0FDqKgHnyZ9OX8HrgYHdHpcHQULXAS2qKpENRg7eAMLC7kTBaixUYFkKAzWAAnLC7FLVxLWDBLKCwaKTULgEwbLA4hJtOkSBNqITT3xEgfLpBtzE%2FjiuL04RGEBgwWhShRgQExHBAAh%2BQQJCgAAACwAAAAAIAAgAAAE7xDISWlSqerNpyJKhWRdlSAVoVLCWk6JKlAqAavhO9UkUHsqlE6CwO1cRdCQ8iEIfzFVTzLdRAmZX3I2SfZiCqGk5dTESJeaOAlClzsJsqwiJwiqnFrb2nS9kmIcgEsjQydLiIlHehhpejaIjzh9eomSjZR%2BipslWIRLAgMDOR2DOqKogTB9pCUJBagDBXR6XB0EBkIIsaRsGGMMAxoDBgYHTKJiUYEGDAzHC9EACcUGkIgFzgwZ0QsSBcXHiQvOwgDdEwfFs0sDzt4S6BK4xYjkDOzn0unFeBzOBijIm1Dgmg5YFQwsCMjp1oJ8LyIAACH5BAkKAAAALAAAAAAgACAAAATwEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiUd6GGl6NoiPOH16iZKNlH6KmyWFOggHhEEvAwwMA0N9GBsEC6amhnVcEwavDAazGwIDaH1ipaYLBUTCGgQDA8NdHz0FpqgTBwsLqAbWAAnIA4FWKdMLGdYGEgraigbT0OITBcg5QwPT4xLrROZL6AuQAPUS7bxLpoWidY0JtxLHKhwwMJBTHgPKdEQAACH5BAkKAAAALAAAAAAgACAAAATrEMhJaVKp6s2nIkqFZF2VIBWhUsJaTokqUCoBq%2BE71SRQeyqUToLA7VxF0JDyIQh%2FMVVPMt1ECZlfcjZJ9mIKoaTl1MRIl5o4CUKXOwmyrCInCKqcWtvadL2SYhyASyNDJ0uIiUd6GAULDJCRiXo1CpGXDJOUjY%2BYip9DhToJA4RBLwMLCwVDfRgbBAaqqoZ1XBMHswsHtxtFaH1iqaoGNgAIxRpbFAgfPQSqpbgGBqUD1wBXeCYp1AYZ19JJOYgH1KwA4UBvQwXUBxPqVD9L3sbp2BNk2xvvFPJd%2BMFCN6HAAIKgNggY0KtEBAAh%2BQQJCgAAACwAAAAAIAAgAAAE6BDISWlSqerNpyJKhWRdlSAVoVLCWk6JKlAqAavhO9UkUHsqlE6CwO1cRdCQ8iEIfzFVTzLdRAmZX3I2SfYIDMaAFdTESJeaEDAIMxYFqrOUaNW4E4ObYcCXaiBVEgULe0NJaxxtYksjh2NLkZISgDgJhHthkpU4mW6blRiYmZOlh4JWkDqILwUGBnE6TYEbCgevr0N1gH4At7gHiRpFaLNrrq8HNgAJA70AWxQIH1%2BvsYMDAzZQPC9VCNkDWUhGkuE5PxJNwiUK4UfLzOlD4WvzAHaoG9nxPi5d%2BjYUqfAhhykOFwJWiAAAIfkECQoAAAAsAAAAACAAIAAABPAQyElpUqnqzaciSoVkXVUMFaFSwlpOCcMYlErAavhOMnNLNo8KsZsMZItJEIDIFSkLGQoQTNhIsFehRww2CQLKF0tYGKYSg%2BygsZIuNqJksKgbfgIGepNo2cIUB3V1B3IvNiBYNQaDSTtfhhx0CwVPI0UJe0%2Bbm4g5VgcGoqOcnjmjqDSdnhgEoamcsZuXO1aWQy8KAwOAuTYYGwi7w5h%2BKr0SJ8MFihpNbx%2B4Erq7BYBuzsdiH1jCAzoSfl0rVirNbRXlBBlLX%2BBP0XJLAPGzTkAuAOqb0WT5AH7OcdCm5B8TgRwSRKIHQtaLCwg1RAAAOwAAAAAAAAAAAA%3D%3D);
+
+ visibility: visible;
+ opacity: 0.6;
+ transition: all 0.3s ease;
+ }
+
+ .reveal > .overlay header {
+ position: absolute;
+ left: 0;
+ top: 0;
+ width: 100%;
+ padding: $overlayHeaderPadding;
+ z-index: 2;
+ box-sizing: border-box;
+ }
+ .reveal > .overlay header a {
+ display: inline-block;
+ width: $overlayHeaderHeight;
+ height: $overlayHeaderHeight;
+ line-height: 36px;
+ padding: 0 10px;
+ float: right;
+ opacity: 0.6;
+
+ box-sizing: border-box;
+ }
+ .reveal > .overlay header a:hover {
+ opacity: 1;
+ }
+ .reveal > .overlay header a .icon {
+ display: inline-block;
+ width: 20px;
+ height: 20px;
+
+ background-position: 50% 50%;
+ background-size: 100%;
+ background-repeat: no-repeat;
+ }
+ .reveal > .overlay header a.close .icon {
+ background-image: url(data:image/png;base64,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);
+ }
+ .reveal > .overlay header a.external .icon {
+ background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAcElEQVRYR+2WSQoAIQwEzf8f7XiOMkUQxUPlGkM3hVmiQfQR9GYnH1SsAQlI4DiBqkCMoNb9y2e90IAEJPAcgdznU9+engMaeJ7Azh5Y1U67gAho4DqBqmB1buAf0MB1AlVBek83ZPkmJMGc1wAR+AAqod/B97TRpQAAAABJRU5ErkJggg==);
+ }
+
+ .reveal > .overlay .viewport {
+ position: absolute;
+ display: flex;
+ top: $overlayHeaderHeight + $overlayHeaderPadding*2;
+ right: 0;
+ bottom: 0;
+ left: 0;
+ }
+
+ .reveal > .overlay.overlay-preview .viewport iframe {
+ width: 100%;
+ height: 100%;
+ max-width: 100%;
+ max-height: 100%;
+ border: 0;
+
+ opacity: 0;
+ visibility: hidden;
+ transition: all 0.3s ease;
+ }
+
+ .reveal > .overlay.overlay-preview.loaded .viewport iframe {
+ opacity: 1;
+ visibility: visible;
+ }
+
+ .reveal > .overlay.overlay-preview.loaded .viewport-inner {
+ position: absolute;
+ z-index: -1;
+ left: 0;
+ top: 45%;
+ width: 100%;
+ text-align: center;
+ letter-spacing: normal;
+ }
+ .reveal > .overlay.overlay-preview .x-frame-error {
+ opacity: 0;
+ transition: opacity 0.3s ease 0.3s;
+ }
+ .reveal > .overlay.overlay-preview.loaded .x-frame-error {
+ opacity: 1;
+ }
+
+ .reveal > .overlay.overlay-preview.loaded .spinner {
+ opacity: 0;
+ visibility: hidden;
+ transform: scale(0.2);
+ }
+
+ .reveal > .overlay.overlay-help .viewport {
+ overflow: auto;
+ color: #fff;
+ }
+
+ .reveal > .overlay.overlay-help .viewport .viewport-inner {
+ width: 600px;
+ margin: auto;
+ padding: 20px 20px 80px 20px;
+ text-align: center;
+ letter-spacing: normal;
+ }
+
+ .reveal > .overlay.overlay-help .viewport .viewport-inner .title {
+ font-size: 20px;
+ }
+
+ .reveal > .overlay.overlay-help .viewport .viewport-inner table {
+ border: 1px solid #fff;
+ border-collapse: collapse;
+ font-size: 16px;
+ }
+
+ .reveal > .overlay.overlay-help .viewport .viewport-inner table th,
+ .reveal > .overlay.overlay-help .viewport .viewport-inner table td {
+ width: 200px;
+ padding: 14px;
+ border: 1px solid #fff;
+ vertical-align: middle;
+ }
+
+ .reveal > .overlay.overlay-help .viewport .viewport-inner table th {
+ padding-top: 20px;
+ padding-bottom: 20px;
+ }
+
+
+/*********************************************
+ * PLAYBACK COMPONENT
+ *********************************************/
+
+.reveal .playback {
+ position: absolute;
+ left: 15px;
+ bottom: 20px;
+ z-index: 30;
+ cursor: pointer;
+ transition: all 400ms ease;
+ -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
+}
+
+.reveal.overview .playback {
+ opacity: 0;
+ visibility: hidden;
+}
+
+
+/*********************************************
+ * CODE HIGHLGIHTING
+ *********************************************/
+
+.reveal .hljs {
+ min-height: 100%;
+}
+
+.reveal .hljs table {
+ margin: initial;
+}
+
+.reveal .hljs-ln-code,
+.reveal .hljs-ln-numbers {
+ padding: 0;
+ border: 0;
+}
+
+.reveal .hljs-ln-numbers {
+ opacity: 0.6;
+ padding-right: 0.75em;
+ text-align: right;
+ vertical-align: top;
+}
+
+.reveal .hljs.has-highlights tr:not(.highlight-line) {
+ opacity: 0.4;
+}
+
+.reveal .hljs.has-highlights.fragment {
+ transition: all .2s ease;
+}
+
+.reveal .hljs:not(:first-child).fragment {
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ box-sizing: border-box;
+}
+
+.reveal pre[data-auto-animate-target] {
+ overflow: hidden;
+}
+.reveal pre[data-auto-animate-target] code {
+ height: 100%;
+}
+
+
+/*********************************************
+ * ROLLING LINKS
+ *********************************************/
+
+.reveal .roll {
+ display: inline-block;
+ line-height: 1.2;
+ overflow: hidden;
+
+ vertical-align: top;
+ perspective: 400px;
+ perspective-origin: 50% 50%;
+}
+ .reveal .roll:hover {
+ background: none;
+ text-shadow: none;
+ }
+.reveal .roll span {
+ display: block;
+ position: relative;
+ padding: 0 2px;
+
+ pointer-events: none;
+ transition: all 400ms ease;
+ transform-origin: 50% 0%;
+ transform-style: preserve-3d;
+ backface-visibility: hidden;
+}
+ .reveal .roll:hover span {
+ background: rgba(0,0,0,0.5);
+ transform: translate3d( 0px, 0px, -45px ) rotateX( 90deg );
+ }
+.reveal .roll span:after {
+ content: attr(data-title);
+
+ display: block;
+ position: absolute;
+ left: 0;
+ top: 0;
+ padding: 0 2px;
+ backface-visibility: hidden;
+ transform-origin: 50% 0%;
+ transform: translate3d( 0px, 110%, 0px ) rotateX( -90deg );
+}
+
+
+/*********************************************
+ * SPEAKER NOTES
+ *********************************************/
+
+$notesWidthPercent: 25%;
+
+// Hide on-page notes
+.reveal aside.notes {
+ display: none;
+}
+
+// An interface element that can optionally be used to show the
+// speaker notes to all viewers, on top of the presentation
+.reveal .speaker-notes {
+ display: none;
+ position: absolute;
+ width: math.div($notesWidthPercent, (1 - math.div($notesWidthPercent,100))) * 1%;
+ height: 100%;
+ top: 0;
+ left: 100%;
+ padding: 14px 18px 14px 18px;
+ z-index: 1;
+ font-size: 18px;
+ line-height: 1.4;
+ border: 1px solid rgba( 0, 0, 0, 0.05 );
+ color: #222;
+ background-color: #f5f5f5;
+ overflow: auto;
+ box-sizing: border-box;
+ text-align: left;
+ font-family: Helvetica, sans-serif;
+ -webkit-overflow-scrolling: touch;
+
+ .notes-placeholder {
+ color: #ccc;
+ font-style: italic;
+ }
+
+ &:focus {
+ outline: none;
+ }
+
+ &:before {
+ content: 'Speaker notes';
+ display: block;
+ margin-bottom: 10px;
+ opacity: 0.5;
+ }
+}
+
+
+.reveal.show-notes {
+ max-width: 100% - $notesWidthPercent;
+ overflow: visible;
+}
+
+.reveal.show-notes .speaker-notes {
+ display: block;
+}
+
+@media screen and (min-width: 1600px) {
+ .reveal .speaker-notes {
+ font-size: 20px;
+ }
+}
+
+@media screen and (max-width: 1024px) {
+ .reveal.show-notes {
+ border-left: 0;
+ max-width: none;
+ max-height: 70%;
+ max-height: 70vh;
+ overflow: visible;
+ }
+
+ .reveal.show-notes .speaker-notes {
+ top: 100%;
+ left: 0;
+ width: 100%;
+ height: 30vh;
+ border: 0;
+ }
+}
+
+@media screen and (max-width: 600px) {
+ .reveal.show-notes {
+ max-height: 60%;
+ max-height: 60vh;
+ }
+
+ .reveal.show-notes .speaker-notes {
+ top: 100%;
+ height: 40vh;
+ }
+
+ .reveal .speaker-notes {
+ font-size: 14px;
+ }
+}
+
+
+/*********************************************
+ * JUMP-TO-SLIDE COMPONENT
+ *********************************************/
+
+ .reveal .jump-to-slide {
+ position: absolute;
+ top: 15px;
+ left: 15px;
+ z-index: 30;
+ font-size: 32px;
+ -webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
+}
+
+.reveal .jump-to-slide-input {
+ background: transparent;
+ padding: 8px;
+ font-size: inherit;
+ color: currentColor;
+ border: 0;
+}
+.reveal .jump-to-slide-input::placeholder {
+ color: currentColor;
+ opacity: 0.5;
+}
+
+.reveal.has-dark-background .jump-to-slide-input {
+ color: #fff;
+}
+.reveal.has-light-background .jump-to-slide-input {
+ color: #222;
+}
+
+.reveal .jump-to-slide-input:focus {
+ outline: none;
+}
+
+
+/*********************************************
+ * ZOOM PLUGIN
+ *********************************************/
+
+.zoomed .reveal *,
+.zoomed .reveal *:before,
+.zoomed .reveal *:after {
+ backface-visibility: visible !important;
+}
+
+.zoomed .reveal .progress,
+.zoomed .reveal .controls {
+ opacity: 0;
+}
+
+.zoomed .reveal .roll span {
+ background: none;
+}
+
+.zoomed .reveal .roll span:after {
+ visibility: hidden;
+}
+
+
+/*********************************************
+ * PRINT STYLES
+ *********************************************/
+
+@import 'print/pdf.scss';
+@import 'print/paper.scss';
+
diff --git a/inst/reveal.js-4.6.1/css/theme/README.md b/inst/reveal.js-4.6.1/css/theme/README.md
new file mode 100644
index 0000000..30916c4
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/README.md
@@ -0,0 +1,21 @@
+## Dependencies
+
+Themes are written using Sass to keep things modular and reduce the need for repeated selectors across files. Make sure that you have the reveal.js development environment installed before proceeding: https://revealjs.com/installation/#full-setup
+
+## Creating a Theme
+
+To create your own theme, start by duplicating a ```.scss``` file in [/css/theme/source](https://github.com/hakimel/reveal.js/blob/master/css/theme/source). It will be automatically compiled from Sass to CSS (see the [gulpfile](https://github.com/hakimel/reveal.js/blob/master/gulpfile.js)) when you run `npm run build -- css-themes`.
+
+Each theme file does four things in the following order:
+
+1. **Include [/css/theme/template/mixins.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/mixins.scss)**
+Shared utility functions.
+
+2. **Include [/css/theme/template/settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss)**
+Declares a set of custom variables that the template file (step 4) expects. Can be overridden in step 3.
+
+3. **Override**
+This is where you override the default theme. Either by specifying variables (see [settings.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/settings.scss) for reference) or by adding any selectors and styles you please.
+
+4. **Include [/css/theme/template/theme.scss](https://github.com/hakimel/reveal.js/blob/master/css/theme/template/theme.scss)**
+The template theme file which will generate final CSS output based on the currently defined variables.
diff --git a/inst/reveal.js-4.6.1/css/theme/source/beige.scss b/inst/reveal.js-4.6.1/css/theme/source/beige.scss
new file mode 100644
index 0000000..1f60178
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/beige.scss
@@ -0,0 +1,41 @@
+/**
+ * Beige theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(./fonts/league-gothic/league-gothic.css);
+@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainColor: #333;
+$headingColor: #333;
+$headingTextShadow: none;
+$backgroundColor: #f7f3de;
+$linkColor: #8b743d;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: rgba(79, 64, 28, 0.99);
+$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15);
+
+// Background generator
+@mixin bodyBackground() {
+ @include radial-gradient( rgba(247,242,211,1), rgba(255,255,255,1) );
+}
+
+// Change text colors against dark slide backgrounds
+@include dark-bg-text-color(#fff);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/black-contrast.scss b/inst/reveal.js-4.6.1/css/theme/source/black-contrast.scss
new file mode 100644
index 0000000..9e1a2ca
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/black-contrast.scss
@@ -0,0 +1,49 @@
+/**
+ * Black compact & high contrast reveal.js theme, with headers not in capitals.
+ *
+ * By Peter Kehl. Based on black.(s)css by Hakim El Hattab, http://hakim.se
+ *
+ * - Keep the source similar to black.css - for easy comparison.
+ * - $mainFontSize controls code blocks, too (although under some ratio).
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(./fonts/source-sans-pro/source-sans-pro.css);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #000000;
+
+$mainColor: #fff;
+$headingColor: #fff;
+
+$mainFontSize: 42px;
+$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingFontWeight: 600;
+$linkColor: #42affa;
+$linkColorHover: lighten( $linkColor, 15% );
+$selectionBackgroundColor: lighten( $linkColor, 25% );
+
+$heading1Size: 2.5em;
+$heading2Size: 1.6em;
+$heading3Size: 1.3em;
+$heading4Size: 1.0em;
+
+// Change text colors against light slide backgrounds
+@include light-bg-text-color(#000);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/black.scss b/inst/reveal.js-4.6.1/css/theme/source/black.scss
new file mode 100644
index 0000000..7c655c4
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/black.scss
@@ -0,0 +1,46 @@
+/**
+ * Black theme for reveal.js. This is the opposite of the 'white' theme.
+ *
+ * By Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(./fonts/source-sans-pro/source-sans-pro.css);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #191919;
+
+$mainColor: #fff;
+$headingColor: #fff;
+
+$mainFontSize: 42px;
+$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingFontWeight: 600;
+$linkColor: #42affa;
+$linkColorHover: lighten( $linkColor, 15% );
+$selectionBackgroundColor: rgba( $linkColor, 0.75 );
+
+$heading1Size: 2.5em;
+$heading2Size: 1.6em;
+$heading3Size: 1.3em;
+$heading4Size: 1.0em;
+
+// Change text colors against light slide backgrounds
+@include light-bg-text-color(#222);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/blood.scss b/inst/reveal.js-4.6.1/css/theme/source/blood.scss
new file mode 100644
index 0000000..b5a8679
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/blood.scss
@@ -0,0 +1,87 @@
+/**
+ * Blood theme for reveal.js
+ * Author: Walther http://github.com/Walther
+ *
+ * Designed to be used with highlight.js theme
+ * "monokai_sublime.css" available from
+ * https://github.com/isagalaev/highlight.js/
+ *
+ * For other themes, change $codeBackground accordingly.
+ *
+ */
+
+ // Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+// Include theme-specific fonts
+
+@import url(https://fonts.googleapis.com/css?family=Ubuntu:300,700,300italic,700italic);
+
+// Colors used in the theme
+$blood: #a23;
+$coal: #222;
+$codeBackground: #23241f;
+
+$backgroundColor: $coal;
+
+// Main text
+$mainFont: Ubuntu, 'sans-serif';
+$mainColor: #eee;
+
+// Headings
+$headingFont: Ubuntu, 'sans-serif';
+$headingTextShadow: 2px 2px 2px $coal;
+
+// h1 shadow, borrowed humbly from
+// (c) Default theme by Hakim El Hattab
+$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15);
+
+// Links
+$linkColor: $blood;
+$linkColorHover: lighten( $linkColor, 20% );
+
+// Text selection
+$selectionBackgroundColor: $blood;
+$selectionColor: #fff;
+
+// Change text colors against dark slide backgrounds
+@include light-bg-text-color(#222);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
+
+// some overrides after theme template import
+
+.reveal p {
+ font-weight: 300;
+ text-shadow: 1px 1px $coal;
+}
+
+section.has-light-background {
+ p, h1, h2, h3, h4 {
+ text-shadow: none;
+ }
+}
+
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+ font-weight: 700;
+}
+
+.reveal p code {
+ background-color: $codeBackground;
+ display: inline-block;
+ border-radius: 7px;
+}
+
+.reveal small code {
+ vertical-align: baseline;
+}
\ No newline at end of file
diff --git a/inst/reveal.js-4.6.1/css/theme/source/dracula.scss b/inst/reveal.js-4.6.1/css/theme/source/dracula.scss
new file mode 100644
index 0000000..ae968b8
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/dracula.scss
@@ -0,0 +1,106 @@
+/**
+ * Dracula Dark theme for reveal.js.
+ * Based on https://draculatheme.com
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+$systemFontsSansSerif: -apple-system,
+ BlinkMacSystemFont,
+ avenir next,
+ avenir,
+ segoe ui,
+ helvetica neue,
+ helvetica,
+ Cantarell,
+ Ubuntu,
+ roboto,
+ noto,
+ arial,
+ sans-serif;
+$systemFontsMono: Menlo,
+ Consolas,
+ Monaco,
+ Liberation Mono,
+ Lucida Console,
+ monospace;
+
+/**
+ * Dracula colors by Zeno Rocha
+ * https://draculatheme.com/contribute
+ */
+html * {
+ color-profile: sRGB;
+ rendering-intent: auto;
+}
+
+$background: #282A36;
+$foreground: #F8F8F2;
+$selection: #44475A;
+$comment: #6272A4;
+$red: #FF5555;
+$orange: #FFB86C;
+$yellow: #F1FA8C;
+$green: #50FA7B;
+$purple: #BD93F9;
+$cyan: #8BE9FD;
+$pink: #FF79C6;
+
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainColor: $foreground;
+$headingColor: $purple;
+$headingTextShadow: none;
+$headingTextTransform: none;
+$backgroundColor: $background;
+$linkColor: $pink;
+$linkColorHover: $cyan;
+$selectionBackgroundColor: $selection;
+$inlineCodeColor: $green;
+$listBulletColor: $cyan;
+
+$mainFont: $systemFontsSansSerif;
+$codeFont: "Fira Code", $systemFontsMono;
+
+// Change text colors against light slide backgrounds
+@include light-bg-text-color($background);
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
+
+// Define additional color effects based on Dracula spec
+// https://spec.draculatheme.com/
+:root {
+ --r-bold-color: #{$orange};
+ --r-italic-color: #{$yellow};
+ --r-inline-code-color: #{$inlineCodeColor};
+ --r-list-bullet-color: #{$listBulletColor};
+}
+
+.reveal {
+ strong, b {
+ color: var(--r-bold-color);
+ }
+ em, i, blockquote {
+ color: var(--r-italic-color);
+ }
+ code {
+ color: var(--r-inline-code-color);
+ }
+ // Dracula colored list bullets and numbers
+ ul, ol {
+ li::marker {
+ color: var(--r-list-bullet-color);
+ }
+ }
+}
+
diff --git a/inst/reveal.js-4.6.1/css/theme/source/league.scss b/inst/reveal.js-4.6.1/css/theme/source/league.scss
new file mode 100644
index 0000000..ee01258
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/league.scss
@@ -0,0 +1,36 @@
+/**
+ * League theme for reveal.js.
+ *
+ * This was the default theme pre-3.0.0.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(./fonts/league-gothic/league-gothic.css);
+@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+// Override theme settings (see ../template/settings.scss)
+$headingTextShadow: 0px 0px 6px rgba(0,0,0,0.2);
+$heading1TextShadow: 0 1px 0 #ccc, 0 2px 0 #c9c9c9, 0 3px 0 #bbb, 0 4px 0 #b9b9b9, 0 5px 0 #aaa, 0 6px 1px rgba(0,0,0,.1), 0 0 5px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.3), 0 3px 5px rgba(0,0,0,.2), 0 5px 10px rgba(0,0,0,.25), 0 20px 20px rgba(0,0,0,.15);
+
+// Background generator
+@mixin bodyBackground() {
+ @include radial-gradient( rgba(28,30,32,1), rgba(85,90,95,1) );
+}
+
+// Change text colors against light slide backgrounds
+@include light-bg-text-color(#222);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/moon.scss b/inst/reveal.js-4.6.1/css/theme/source/moon.scss
new file mode 100644
index 0000000..ff2074a
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/moon.scss
@@ -0,0 +1,58 @@
+/**
+ * Solarized Dark theme for reveal.js.
+ * Author: Achim Staebler
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(./fonts/league-gothic/league-gothic.css);
+@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+/**
+ * Solarized colors by Ethan Schoonover
+ */
+html * {
+ color-profile: sRGB;
+ rendering-intent: auto;
+}
+
+// Solarized colors
+$base03: #002b36;
+$base02: #073642;
+$base01: #586e75;
+$base00: #657b83;
+$base0: #839496;
+$base1: #93a1a1;
+$base2: #eee8d5;
+$base3: #fdf6e3;
+$yellow: #b58900;
+$orange: #cb4b16;
+$red: #dc322f;
+$magenta: #d33682;
+$violet: #6c71c4;
+$blue: #268bd2;
+$cyan: #2aa198;
+$green: #859900;
+
+// Override theme settings (see ../template/settings.scss)
+$mainColor: $base1;
+$headingColor: $base2;
+$headingTextShadow: none;
+$backgroundColor: $base03;
+$linkColor: $blue;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: $magenta;
+
+// Change text colors against light slide backgrounds
+@include light-bg-text-color(#222);
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/night.scss b/inst/reveal.js-4.6.1/css/theme/source/night.scss
new file mode 100644
index 0000000..98a2062
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/night.scss
@@ -0,0 +1,37 @@
+/**
+ * Black theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(https://fonts.googleapis.com/css?family=Montserrat:700);
+@import url(https://fonts.googleapis.com/css?family=Open+Sans:400,700,400italic,700italic);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #111;
+
+$mainFont: 'Open Sans', sans-serif;
+$linkColor: #e7ad52;
+$linkColorHover: lighten( $linkColor, 20% );
+$headingFont: 'Montserrat', Impact, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: -0.03em;
+$headingTextTransform: none;
+$selectionBackgroundColor: #e7ad52;
+
+// Change text colors against light slide backgrounds
+@include light-bg-text-color(#222);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git a/inst/reveal.js-4.6.1/css/theme/source/serif.scss b/inst/reveal.js-4.6.1/css/theme/source/serif.scss
new file mode 100644
index 0000000..1c8d778
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/serif.scss
@@ -0,0 +1,38 @@
+/**
+ * A simple theme for reveal.js presentations, similar
+ * to the default theme. The accent color is brown.
+ *
+ * This theme is Copyright (C) 2012-2013 Owen Versteeg, http://owenversteeg.com - it is MIT licensed.
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
+$mainColor: #000;
+$headingFont: 'Palatino Linotype', 'Book Antiqua', Palatino, FreeSerif, serif;
+$headingColor: #383D3D;
+$headingTextShadow: none;
+$headingTextTransform: none;
+$backgroundColor: #F0F1EB;
+$linkColor: #51483D;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: #26351C;
+
+.reveal a {
+ line-height: 1.3em;
+}
+
+// Change text colors against dark slide backgrounds
+@include dark-bg-text-color(#fff);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/simple.scss b/inst/reveal.js-4.6.1/css/theme/source/simple.scss
new file mode 100644
index 0000000..faf245f
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/simple.scss
@@ -0,0 +1,40 @@
+/**
+ * A simple theme for reveal.js presentations, similar
+ * to the default theme. The accent color is darkblue.
+ *
+ * This theme is Copyright (C) 2012 Owen Versteeg, https://github.com/StereotypicalApps. It is MIT licensed.
+ * reveal.js is Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(https://fonts.googleapis.com/css?family=News+Cycle:400,700);
+@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainFont: 'Lato', sans-serif;
+$mainColor: #000;
+$headingFont: 'News Cycle', Impact, sans-serif;
+$headingColor: #000;
+$headingTextShadow: none;
+$headingTextTransform: none;
+$backgroundColor: #fff;
+$linkColor: #00008B;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: rgba(0, 0, 0, 0.99);
+
+// Change text colors against dark slide backgrounds
+@include dark-bg-text-color(#fff);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
\ No newline at end of file
diff --git a/inst/reveal.js-4.6.1/css/theme/source/sky.scss b/inst/reveal.js-4.6.1/css/theme/source/sky.scss
new file mode 100644
index 0000000..c83b9c0
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/sky.scss
@@ -0,0 +1,49 @@
+/**
+ * Sky theme for reveal.js.
+ *
+ * Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(https://fonts.googleapis.com/css?family=Quicksand:400,700,400italic,700italic);
+@import url(https://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700);
+
+
+// Override theme settings (see ../template/settings.scss)
+$mainFont: 'Open Sans', sans-serif;
+$mainColor: #333;
+$headingFont: 'Quicksand', sans-serif;
+$headingColor: #333;
+$headingLetterSpacing: -0.08em;
+$headingTextShadow: none;
+$backgroundColor: #f7fbfc;
+$linkColor: #3b759e;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: #134674;
+
+// Fix links so they are not cut off
+.reveal a {
+ line-height: 1.3em;
+}
+
+// Background generator
+@mixin bodyBackground() {
+ @include radial-gradient( #add9e4, #f7fbfc );
+}
+
+// Change text colors against dark slide backgrounds
+@include dark-bg-text-color(#fff);
+
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/solarized.scss b/inst/reveal.js-4.6.1/css/theme/source/solarized.scss
new file mode 100644
index 0000000..8bdf1eb
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/solarized.scss
@@ -0,0 +1,63 @@
+/**
+ * Solarized Light theme for reveal.js.
+ * Author: Achim Staebler
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+
+// Include theme-specific fonts
+@import url(./fonts/league-gothic/league-gothic.css);
+@import url(https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic);
+
+
+/**
+ * Solarized colors by Ethan Schoonover
+ */
+html * {
+ color-profile: sRGB;
+ rendering-intent: auto;
+}
+
+// Solarized colors
+$base03: #002b36;
+$base02: #073642;
+$base01: #586e75;
+$base00: #657b83;
+$base0: #839496;
+$base1: #93a1a1;
+$base2: #eee8d5;
+$base3: #fdf6e3;
+$yellow: #b58900;
+$orange: #cb4b16;
+$red: #dc322f;
+$magenta: #d33682;
+$violet: #6c71c4;
+$blue: #268bd2;
+$cyan: #2aa198;
+$green: #859900;
+
+// Override theme settings (see ../template/settings.scss)
+$mainColor: $base00;
+$headingColor: $base01;
+$headingTextShadow: none;
+$backgroundColor: $base3;
+$linkColor: $blue;
+$linkColorHover: lighten( $linkColor, 20% );
+$selectionBackgroundColor: $magenta;
+
+// Background generator
+// @mixin bodyBackground() {
+// @include radial-gradient( rgba($base3,1), rgba(lighten($base3, 20%),1) );
+// }
+
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/white-contrast.scss b/inst/reveal.js-4.6.1/css/theme/source/white-contrast.scss
new file mode 100644
index 0000000..2a23ba4
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/white-contrast.scss
@@ -0,0 +1,49 @@
+/**
+ * White compact & high contrast reveal.js theme, with headers not in capitals.
+ *
+ * By Peter Kehl. Based on white.(s)css by Hakim El Hattab, http://hakim.se
+ *
+ * - Keep the source similar to black.css - for easy comparison.
+ * - $mainFontSize controls code blocks, too (although under some ratio).
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(./fonts/source-sans-pro/source-sans-pro.css);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #fff;
+
+$mainColor: #000;
+$headingColor: #000;
+
+$mainFontSize: 42px;
+$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingFontWeight: 600;
+$linkColor: #2a76dd;
+$linkColorHover: lighten( $linkColor, 15% );
+$selectionBackgroundColor: lighten( $linkColor, 25% );
+
+$heading1Size: 2.5em;
+$heading2Size: 1.6em;
+$heading3Size: 1.3em;
+$heading4Size: 1.0em;
+
+// Change text colors against dark slide backgrounds
+@include dark-bg-text-color(#fff);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/source/white.scss b/inst/reveal.js-4.6.1/css/theme/source/white.scss
new file mode 100644
index 0000000..443d30a
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/source/white.scss
@@ -0,0 +1,46 @@
+/**
+ * White theme for reveal.js. This is the opposite of the 'black' theme.
+ *
+ * By Hakim El Hattab, http://hakim.se
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url(./fonts/source-sans-pro/source-sans-pro.css);
+
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #fff;
+
+$mainColor: #222;
+$headingColor: #222;
+
+$mainFontSize: 42px;
+$mainFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingFont: 'Source Sans Pro', Helvetica, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingFontWeight: 600;
+$linkColor: #2a76dd;
+$linkColorHover: lighten( $linkColor, 15% );
+$selectionBackgroundColor: lighten( $linkColor, 25% );
+
+$heading1Size: 2.5em;
+$heading2Size: 1.6em;
+$heading3Size: 1.3em;
+$heading4Size: 1.0em;
+
+// Change text colors against dark slide backgrounds
+@include dark-bg-text-color(#fff);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
diff --git a/inst/reveal.js-4.6.1/css/theme/template/exposer.scss b/inst/reveal.js-4.6.1/css/theme/template/exposer.scss
new file mode 100644
index 0000000..4aec3e8
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/template/exposer.scss
@@ -0,0 +1,28 @@
+// Exposes theme's variables for easy re-use in CSS for plugin authors
+
+:root {
+ --r-background-color: #{$backgroundColor};
+ --r-main-font: #{$mainFont};
+ --r-main-font-size: #{$mainFontSize};
+ --r-main-color: #{$mainColor};
+ --r-block-margin: #{$blockMargin};
+ --r-heading-margin: #{$headingMargin};
+ --r-heading-font: #{$headingFont};
+ --r-heading-color: #{$headingColor};
+ --r-heading-line-height: #{$headingLineHeight};
+ --r-heading-letter-spacing: #{$headingLetterSpacing};
+ --r-heading-text-transform: #{$headingTextTransform};
+ --r-heading-text-shadow: #{$headingTextShadow};
+ --r-heading-font-weight: #{$headingFontWeight};
+ --r-heading1-text-shadow: #{$heading1TextShadow};
+ --r-heading1-size: #{$heading1Size};
+ --r-heading2-size: #{$heading2Size};
+ --r-heading3-size: #{$heading3Size};
+ --r-heading4-size: #{$heading4Size};
+ --r-code-font: #{$codeFont};
+ --r-link-color: #{$linkColor};
+ --r-link-color-dark: #{darken($linkColor , 15% )};
+ --r-link-color-hover: #{$linkColorHover};
+ --r-selection-background-color: #{$selectionBackgroundColor};
+ --r-selection-color: #{$selectionColor};
+}
diff --git a/inst/reveal.js-4.6.1/css/theme/template/mixins.scss b/inst/reveal.js-4.6.1/css/theme/template/mixins.scss
new file mode 100644
index 0000000..17a3db5
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/template/mixins.scss
@@ -0,0 +1,45 @@
+@mixin vertical-gradient( $top, $bottom ) {
+ background: $top;
+ background: -moz-linear-gradient( top, $top 0%, $bottom 100% );
+ background: -webkit-gradient( linear, left top, left bottom, color-stop(0%,$top), color-stop(100%,$bottom) );
+ background: -webkit-linear-gradient( top, $top 0%, $bottom 100% );
+ background: -o-linear-gradient( top, $top 0%, $bottom 100% );
+ background: -ms-linear-gradient( top, $top 0%, $bottom 100% );
+ background: linear-gradient( top, $top 0%, $bottom 100% );
+}
+
+@mixin horizontal-gradient( $top, $bottom ) {
+ background: $top;
+ background: -moz-linear-gradient( left, $top 0%, $bottom 100% );
+ background: -webkit-gradient( linear, left top, right top, color-stop(0%,$top), color-stop(100%,$bottom) );
+ background: -webkit-linear-gradient( left, $top 0%, $bottom 100% );
+ background: -o-linear-gradient( left, $top 0%, $bottom 100% );
+ background: -ms-linear-gradient( left, $top 0%, $bottom 100% );
+ background: linear-gradient( left, $top 0%, $bottom 100% );
+}
+
+@mixin radial-gradient( $outer, $inner, $type: circle ) {
+ background: $outer;
+ background: -moz-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
+ background: -webkit-gradient( radial, center center, 0px, center center, 100%, color-stop(0%,$inner), color-stop(100%,$outer) );
+ background: -webkit-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
+ background: -o-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
+ background: -ms-radial-gradient( center, $type cover, $inner 0%, $outer 100% );
+ background: radial-gradient( center, $type cover, $inner 0%, $outer 100% );
+}
+
+@mixin light-bg-text-color( $color ) {
+ section.has-light-background {
+ &, h1, h2, h3, h4, h5, h6 {
+ color: $color;
+ }
+ }
+}
+
+@mixin dark-bg-text-color( $color ) {
+ section.has-dark-background {
+ &, h1, h2, h3, h4, h5, h6 {
+ color: $color;
+ }
+ }
+}
\ No newline at end of file
diff --git a/inst/reveal.js-4.6.1/css/theme/template/settings.scss b/inst/reveal.js-4.6.1/css/theme/template/settings.scss
new file mode 100644
index 0000000..5a917f8
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/template/settings.scss
@@ -0,0 +1,45 @@
+// Base settings for all themes that can optionally be
+// overridden by the super-theme
+
+// Background of the presentation
+$backgroundColor: #2b2b2b;
+
+// Primary/body text
+$mainFont: 'Lato', sans-serif;
+$mainFontSize: 40px;
+$mainColor: #eee;
+
+// Vertical spacing between blocks of text
+$blockMargin: 20px;
+
+// Headings
+$headingMargin: 0 0 $blockMargin 0;
+$headingFont: 'League Gothic', Impact, sans-serif;
+$headingColor: #eee;
+$headingLineHeight: 1.2;
+$headingLetterSpacing: normal;
+$headingTextTransform: uppercase;
+$headingTextShadow: none;
+$headingFontWeight: normal;
+$heading1TextShadow: $headingTextShadow;
+
+$heading1Size: 3.77em;
+$heading2Size: 2.11em;
+$heading3Size: 1.55em;
+$heading4Size: 1.00em;
+
+$codeFont: monospace;
+
+// Links and actions
+$linkColor: #13DAEC;
+$linkColorHover: lighten( $linkColor, 20% );
+
+// Text selection
+$selectionBackgroundColor: #FF5E99;
+$selectionColor: #fff;
+
+// Generates the presentation background, can be overridden
+// to return a background image or gradient
+@mixin bodyBackground() {
+ background: $backgroundColor;
+}
diff --git a/inst/reveal.js-4.6.1/css/theme/template/theme.scss b/inst/reveal.js-4.6.1/css/theme/template/theme.scss
new file mode 100644
index 0000000..bc377d3
--- /dev/null
+++ b/inst/reveal.js-4.6.1/css/theme/template/theme.scss
@@ -0,0 +1,331 @@
+// Base theme template for reveal.js
+
+/*********************************************
+ * GLOBAL STYLES
+ *********************************************/
+
+@import "./exposer";
+
+.reveal-viewport {
+ @include bodyBackground();
+ background-color: var(--r-background-color);
+}
+
+.reveal {
+ font-family: var(--r-main-font);
+ font-size: var(--r-main-font-size);
+ font-weight: normal;
+ color: var(--r-main-color);
+}
+
+.reveal ::selection {
+ color: var(--r-selection-color);
+ background: var(--r-selection-background-color);
+ text-shadow: none;
+}
+
+.reveal ::-moz-selection {
+ color: var(--r-selection-color);
+ background: var(--r-selection-background-color);
+ text-shadow: none;
+}
+
+.reveal .slides section,
+.reveal .slides section>section {
+ line-height: 1.3;
+ font-weight: inherit;
+}
+
+/*********************************************
+ * HEADERS
+ *********************************************/
+
+.reveal h1,
+.reveal h2,
+.reveal h3,
+.reveal h4,
+.reveal h5,
+.reveal h6 {
+ margin: var(--r-heading-margin);
+ color: var(--r-heading-color);
+
+ font-family: var(--r-heading-font);
+ font-weight: var(--r-heading-font-weight);
+ line-height: var(--r-heading-line-height);
+ letter-spacing: var(--r-heading-letter-spacing);
+
+ text-transform: var(--r-heading-text-transform);
+ text-shadow: var(--r-heading-text-shadow);
+
+ word-wrap: break-word;
+}
+
+.reveal h1 {font-size: var(--r-heading1-size); }
+.reveal h2 {font-size: var(--r-heading2-size); }
+.reveal h3 {font-size: var(--r-heading3-size); }
+.reveal h4 {font-size: var(--r-heading4-size); }
+
+.reveal h1 {
+ text-shadow: var(--r-heading1-text-shadow);
+}
+
+
+/*********************************************
+ * OTHER
+ *********************************************/
+
+.reveal p {
+ margin: var(--r-block-margin) 0;
+ line-height: 1.3;
+}
+
+/* Remove trailing margins after titles */
+.reveal h1:last-child,
+.reveal h2:last-child,
+.reveal h3:last-child,
+.reveal h4:last-child,
+.reveal h5:last-child,
+.reveal h6:last-child {
+ margin-bottom: 0;
+}
+
+/* Ensure certain elements are never larger than the slide itself */
+.reveal img,
+.reveal video,
+.reveal iframe {
+ max-width: 95%;
+ max-height: 95%;
+}
+.reveal strong,
+.reveal b {
+ font-weight: bold;
+}
+
+.reveal em {
+ font-style: italic;
+}
+
+.reveal ol,
+.reveal dl,
+.reveal ul {
+ display: inline-block;
+
+ text-align: left;
+ margin: 0 0 0 1em;
+}
+
+.reveal ol {
+ list-style-type: decimal;
+}
+
+.reveal ul {
+ list-style-type: disc;
+}
+
+.reveal ul ul {
+ list-style-type: square;
+}
+
+.reveal ul ul ul {
+ list-style-type: circle;
+}
+
+.reveal ul ul,
+.reveal ul ol,
+.reveal ol ol,
+.reveal ol ul {
+ display: block;
+ margin-left: 40px;
+}
+
+.reveal dt {
+ font-weight: bold;
+}
+
+.reveal dd {
+ margin-left: 40px;
+}
+
+.reveal blockquote {
+ display: block;
+ position: relative;
+ width: 70%;
+ margin: var(--r-block-margin) auto;
+ padding: 5px;
+
+ font-style: italic;
+ background: rgba(255, 255, 255, 0.05);
+ box-shadow: 0px 0px 2px rgba(0,0,0,0.2);
+}
+ .reveal blockquote p:first-child,
+ .reveal blockquote p:last-child {
+ display: inline-block;
+ }
+
+.reveal q {
+ font-style: italic;
+}
+
+.reveal pre {
+ display: block;
+ position: relative;
+ width: 90%;
+ margin: var(--r-block-margin) auto;
+
+ text-align: left;
+ font-size: 0.55em;
+ font-family: var(--r-code-font);
+ line-height: 1.2em;
+
+ word-wrap: break-word;
+
+ box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.15);
+}
+
+.reveal code {
+ font-family: var(--r-code-font);
+ text-transform: none;
+ tab-size: 2;
+}
+
+.reveal pre code {
+ display: block;
+ padding: 5px;
+ overflow: auto;
+ max-height: 400px;
+ word-wrap: normal;
+}
+
+.reveal .code-wrapper {
+ white-space: normal;
+}
+
+.reveal .code-wrapper code {
+ white-space: pre;
+}
+
+.reveal table {
+ margin: auto;
+ border-collapse: collapse;
+ border-spacing: 0;
+}
+
+.reveal table th {
+ font-weight: bold;
+}
+
+.reveal table th,
+.reveal table td {
+ text-align: left;
+ padding: 0.2em 0.5em 0.2em 0.5em;
+ border-bottom: 1px solid;
+}
+
+.reveal table th[align="center"],
+.reveal table td[align="center"] {
+ text-align: center;
+}
+
+.reveal table th[align="right"],
+.reveal table td[align="right"] {
+ text-align: right;
+}
+
+.reveal table tbody tr:last-child th,
+.reveal table tbody tr:last-child td {
+ border-bottom: none;
+}
+
+.reveal sup {
+ vertical-align: super;
+ font-size: smaller;
+}
+.reveal sub {
+ vertical-align: sub;
+ font-size: smaller;
+}
+
+.reveal small {
+ display: inline-block;
+ font-size: 0.6em;
+ line-height: 1.2em;
+ vertical-align: top;
+}
+
+.reveal small * {
+ vertical-align: top;
+}
+
+.reveal img {
+ margin: var(--r-block-margin) 0;
+}
+
+
+/*********************************************
+ * LINKS
+ *********************************************/
+
+.reveal a {
+ color: var(--r-link-color);
+ text-decoration: none;
+ transition: color .15s ease;
+}
+ .reveal a:hover {
+ color: var(--r-link-color-hover);
+ text-shadow: none;
+ border: none;
+ }
+
+.reveal .roll span:after {
+ color: #fff;
+ // background: darken( var(--r-link-color), 15% );
+ background: var(--r-link-color-dark);
+
+}
+
+
+/*********************************************
+ * Frame helper
+ *********************************************/
+
+.reveal .r-frame {
+ border: 4px solid var(--r-main-color);
+ box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
+}
+
+.reveal a .r-frame {
+ transition: all .15s linear;
+}
+
+.reveal a:hover .r-frame {
+ border-color: var(--r-link-color);
+ box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
+}
+
+
+/*********************************************
+ * NAVIGATION CONTROLS
+ *********************************************/
+
+.reveal .controls {
+ color: var(--r-link-color);
+}
+
+
+/*********************************************
+ * PROGRESS BAR
+ *********************************************/
+
+.reveal .progress {
+ background: rgba(0,0,0,0.2);
+ color: var(--r-link-color);
+}
+
+/*********************************************
+ * PRINT BACKGROUND
+ *********************************************/
+ @media print {
+ .backgrounds {
+ background-color: var(--r-background-color);
+ }
+}