diff --git a/app/assets/stylesheets/themes/main_navigation.scss b/app/assets/stylesheets/themes/main_navigation.scss
index 00c66fba5..d5cda07bc 100644
--- a/app/assets/stylesheets/themes/main_navigation.scss
+++ b/app/assets/stylesheets/themes/main_navigation.scss
@@ -162,7 +162,7 @@
 
   .nav {
     position: relative;
-    z-index: 1000;
+    z-index: 100;
   }
 }