diff --git a/web/viewer-geckoview.css b/web/viewer-geckoview.css
index 61dded291..cc8d14381 100644
--- a/web/viewer-geckoview.css
+++ b/web/viewer-geckoview.css
@@ -94,10 +94,6 @@ body {
   inset: 0;
   outline: none;
 }
-#viewerContainer {
-  transition-duration: var(--sidebar-transition-duration);
-  transition-timing-function: var(--sidebar-transition-timing-function);
-}
 
 .dialogButton {
   border: none;