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
index b0f0e32..23ef168 100644
--- a/inst/reveal.js-4.6.1/css/theme/source/ids.scss
+++ b/inst/reveal.js-4.6.1/css/theme/source/ids.scss
@@ -77,3 +77,130 @@
           }
   }
 }
+
+
+/*********************************************
+ * FOOTER
+ *********************************************/
+
+ #ids-footer {
+  opacity: 1;
+  background: white;
+  color: #444444;
+  border-top: dotted orange 2px;
+  transition: opacity 800ms ease-in-out;
+  position: fixed;
+  height: 6%;
+  line-height: 6%;
+  z-index: -20;
+  width: 100%;
+  letter-spacing: 0em;
+  text-align: center;
+  display: table;
+  background-image: url("https://corpora.ids-mannheim.de/slides/reveal.js.ids/images/Mitglied_WGL_transparent.svg");
+  background-repeat: no-repeat;
+  background-position: right 20px center;
+  background-size: 6vH auto;
+}
+
+#ids-footer span {
+  height: 100%;
+  line-height: 100%;
+  z-index: -20;
+  font-size: 2vh;
+  font-family: "Fira Sans Extra Condensed", "Univers LT Std 47 Cn Lt", "Roboto Condensed", 'League Gothic', Impact, sans-serif;
+  display: inline-block;
+  display: table-cell;
+  vertical-align: middle;
+}
+
+#ids-footer div span {}
+
+
+/* Bottom position for the IDS-Footer footer when both progress bar and TOC-Progress are visible */
+
+div.progress[style="display: block;"]~#ids-footer {
+  bottom: calc(3px + 0vh);
+}
+
+
+/* Bottom position for the IDS-Footer footer when TOC-Progress is visible */
+
+#ids-footer {
+  bottom: 3px;
+}
+
+#ids-footer a {
+  color: #555555;
+}
+
+
+/* Bottom position for the IDS-Footer footer when progress bar is visible */
+
+div.progress[style="display: block;"]~footer:last-of-type#ids-footer {
+  bottom: 3px;
+}
+
+
+/* Bottom position for the IDS-Footer footer when neither progress bar nor TOC-Progress are visible */
+
+footer:last-of-type#ids-footer {
+  bottom: 0px;
+}
+
+
+/* Make IDS-Footer invisible if explicitly indicated */
+
+.no-ids-footer #ids-footer {
+  opacity: 0;
+  transition: opacity 800ms ease-in-out;
+}
+
+.title-frame #ids-footer {
+  opacity: 0;
+  transition: opacity 800ms ease-in-out;
+}
+
+.no-toc-progress #ids-footer {
+  opacity: 0;
+  transition: opacity 800ms ease-in-out;
+}
+
+
+/* Make IDS-Footer invisible in overview mode */
+
+.overview #ids-footer {
+  opacity: 0;
+  transition: opacity 800ms ease-in-out;
+}
+
+
+/*
+ * Menu controls
+ */
+
+ body .reveal .slide-menu-button {
+  color: #aaaaaa !important;
+  position: fixed;
+  left: 30px;
+  bottom: 2%;
+  vertical-align: middle;
+  z-index: 30;
+  font-size: 2vh;
+}
+
+#customcontrols > ul {
+  color: #aaaaaa !important;
+  position: fixed;
+  left: 30px;
+  bottom: 2% !important;
+  vertical-align: middle;
+  z-index: 30;
+  font-size: 2vh;
+}
+
+@media only screen and (min-width: 500px) {
+  #customcontrols > ul {
+    bottom: 2% !important;
+  }
+}