diff --git a/frontend/styles.css b/frontend/styles.css
index 590173c..9004651 100644
--- a/frontend/styles.css
+++ b/frontend/styles.css
@@ -561,8 +561,7 @@ body {
     cursor: pointer;
     border: 1px solid var(--border-color);
     transition: var(--transition);
-    position: relative;
-    z-index: 1;
+    isolation: isolate;
 }
 
 .school-map:hover {