diff --git a/inst/reveal.js-4.6.1/dist/theme/ids.css b/inst/reveal.js-4.6.1/dist/theme/ids.css
index d1b4a06..1d8ee86 100644
--- a/inst/reveal.js-4.6.1/dist/theme/ids.css
+++ b/inst/reveal.js-4.6.1/dist/theme/ids.css
@@ -393,10 +393,6 @@
   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 {