diff --git a/home-modules/firefox.nix b/home-modules/firefox.nix
index e9850fe..5b9954a 100644
--- a/home-modules/firefox.nix
+++ b/home-modules/firefox.nix
@@ -187,6 +187,15 @@
         }
       }
 
+      @-moz-document domain(moodle.informatik.tu-darmstadt.de) {
+        body, html , .main-inner, .main-inner * {
+          background-color: transparent !important;
+        }
+        .bg-primary {
+          background-color: rgba(${rice.lib.hex-to-rgb-comma-string accent.base}, 0.5) !important!
+        }
+      }
+
       @-moz-document domain(nx2.site) {
         html {
           background: radial-gradient(rgba(255, 255, 255, 0.8) 5%, transparent 5%) !important;