diff --git a/about/about_assets/about.css b/about/about_assets/about.css
index 872eca6..a61fd2b 100644
--- a/about/about_assets/about.css
+++ b/about/about_assets/about.css
@@ -39,8 +39,8 @@ details[open] summary {
     content: "+";
 }
 
-details[open] #uniContent {
-    list-style-image: url(../../sitewide_assets/power_green.png);
+details[open] #uniContent:after {
+    content: "-"
 }
 #siteContent {
     padding-bottom: 2em