diff --git a/about/about_assets/about.css b/about/about_assets/about.css
index 3459143..870b024 100644
--- a/about/about_assets/about.css
+++ b/about/about_assets/about.css
@@ -36,6 +36,6 @@ p .aboutTitle {
     clear: both;
 }
 
-details summary:after {
-    content: "";
+summary::-webkit-details-marker {
+  background: none;
 }
\ No newline at end of file