diff --git a/app/main.css b/app/main.css
index 29b37ad4..e6cdac6c 100644
--- a/app/main.css
+++ b/app/main.css
@@ -118,7 +118,7 @@ details {
   overflow: hidden;
 }
 
-details > summary::-webkit-details-marker {
+details > summary::marker {
   display: none;
 }