diff --git a/export/pghrtcss.css b/export/pghrtcss.css
index b47a137..c646147 100644
--- a/export/pghrtcss.css
+++ b/export/pghrtcss.css
@@ -315,11 +315,6 @@ ol[class="ltx_toclist ltx_toclist_section"] {
   cursor: pointer;
 }
 
-.togglebuttons > button, #return {
-  transition-property: background, border;
-  transition-duration: 0.1s;
-  transition-timing-function: linear;
-}
 
 .togglebuttons > button:hover, #return:hover {
   background: var(--toc-hover);