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 a2f612c..9d55508 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
@@ -82,8 +82,7 @@
 /*********************************************
  * FOOTER
  *********************************************/
-
- #ids-footer {
+ #ids-footer:not(title-slide) {
   opacity: 1;
   background: white;
   color: #444444;
@@ -104,24 +103,18 @@
   line-height: 100%;
   z-index: -20;
   font-size: 2vh;
-  font-family: "Fira Sans Condensed", "Fira Sans", "Roboto Condensed", 'League Gothic', Impact, sans-serif;
+  font-family: "Fira Sans Condensed", "Fira Sans", "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 {
+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;
 }
@@ -130,23 +123,17 @@
   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 {
+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;
@@ -162,9 +149,7 @@
   transition: opacity 800ms ease-in-out;
 }
 
-
 /* Make IDS-Footer invisible in overview mode */
-
 .overview #ids-footer {
   opacity: 0;
   transition: opacity 800ms ease-in-out;
@@ -188,24 +173,22 @@
   display: none !important;
 }
 
-.title-frame div {
-  text-align:right !important;
+.title-frame div.slide-background-content {
+  text-align: right !important;
   background-image: url("https://corpora.ids-mannheim.de/slides/reveal.js.ids/images/Mitglied_WGL_transparent.svg") !important;
   background-repeat: no-repeat;
   background-position: right 90px bottom 10px !important;
   background-size: 7vH auto !important;
-
 }
 
 .slide-menu-items, .slide-menu-toolbar {
-  font-family: 'Fira Sans' !important;
+  font-family: "Fira Sans" !important;
 }
 
 /*
  * Menu controls
  */
-
- body .reveal .slide-menu-button {
+body .reveal .slide-menu-button {
   color: #aaaaaa !important;
   position: fixed;
   left: 30px;