diff --git a/inst/reveal.js-4.6.1/css/theme/source/ids.scss b/inst/reveal.js-4.6.1/css/theme/source/ids.scss
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+/**
+ * IDS theme for reveal.js
+ *
+ * By Marc Kupietz
+ */
+
+
+// Default mixins and settings -----------------
+@import "../template/mixins";
+@import "../template/settings";
+// ---------------------------------------------
+
+
+// Include theme-specific fonts
+@import url('https://code.cdn.mozilla.net/fonts/fira.css');
+@import url('https://korap.ids-mannheim.de/font/fira-condensed.css');
+@import url('https://korap.ids-mannheim.de/font/libertinus.css');
+
+$idsOrange: #f6a800;
+
+// Override theme settings (see ../template/settings.scss)
+$backgroundColor: #fff;
+
+$mainColor: #222;
+$headingColor: $idsOrange;
+
+$mainFontSize: 42px;
+$mainFont: 'Libertinus Serif', Helvetica, sans-serif;
+$headingFont: 'Fira Sans Extra Condensed', 'Fira Sans', Helvetica, sans-serif;
+$headingTextShadow: none;
+$headingLetterSpacing: 0.05ex;
+$headingTextTransform: uppercase;
+$headingFontWeight: 600;
+$linkColor: #2a76dd;
+$linkColorHover: lighten( $linkColor, 15% );
+$selectionBackgroundColor: lighten( $linkColor, 25% );
+
+$heading1Size: 2em;
+$heading2Size: 1.35em;
+$heading3Size: 1.1em;
+$heading4Size: 1.0em;
+
+$listBulletColor: $idsOrange;
+
+// Change text colors against dark slide backgrounds
+@include dark-bg-text-color(#fff);
+
+
+// Theme template ------------------------------
+@import "../template/theme";
+// ---------------------------------------------
+
+body {
+  background-image: url('https://corpora.ids-mannheim.de/slides/reveal.js.ids/images/IDS-Logo-2019.svg'),
+    url('https://corpora.ids-mannheim.de/slides/reveal.js.ids/images/orange_bar.png') !important;
+  background-repeat: no-repeat !important;
+  background-position: top 20px right 20px, top 20px left !important;
+  background-size: 25vH auto, 4vH 16vH !important;
+}
+
+// Define additional color effects based on Dracula spec
+// https://spec.draculatheme.com/
+:root {
+  --r-bold-color: #{$idsOrange};
+  --r-list-bullet-color: #{$listBulletColor};
+}
+
+.reveal {
+  strong, b {
+          color: var(--r-bold-color);
+  }
+
+  // Dracula colored list bullets and numbers
+  ul, ol {
+          li::marker {
+                  color: var(--r-list-bullet-color) !important;
+          }
+  }
+}