diff --git a/examples/overlay.html b/examples/overlay.html
index fbcd35d983..361bda546a 100644
--- a/examples/overlay.html
+++ b/examples/overlay.html
@@ -24,9 +24,6 @@
         font-weight: bold;
         text-shadow: black 0.1em 0.1em 0.2em;
       }
-      .popover {
-        z-index: auto;
-      }
       .popover-content {
         min-width: 180px;
       }