Merge pull request #38946 from aireilly/fix-z-index-hamburger-menu

fixes hamburger z-index

Author: vikram-redhat

_stylesheets/docs.css

@@ -684,7 +684,7 @@ h2:hover>a.anchor, h2>a.anchor:hover, h3:hover>a.anchor, h3>a.anchor:hover, h4:h
     font-size: 20px;
     opacity: 90%;
     position: fixed;
-    z-index: 9;
+    z-index: 9999;
     filter: drop-shadow(0 0 0.1rem grey);
   }
 
@@ -743,7 +743,7 @@ h2:hover>a.anchor, h2>a.anchor:hover, h3:hover>a.anchor, h3>a.anchor:hover, h4:h
     font-size: 20px;
     opacity: 90%;
     position: fixed;
-    z-index: 9;
+    z-index: 9999;
     filter: drop-shadow(0 0 0.1rem grey);
   }
 
@@ -798,7 +798,7 @@ h2:hover>a.anchor, h2>a.anchor:hover, h3:hover>a.anchor, h3>a.anchor:hover, h4:h
     font-size: 20px;
     opacity: 90%;
     position: fixed;
-    z-index: 6;
+    z-index: 9999;
     filter: drop-shadow(0 0 0.1rem grey);
   }