diff --git a/src/RocketJsDemo.js b/src/RocketJsDemo.js
index f8461dae..3cc67571 100644
--- a/src/RocketJsDemo.js
+++ b/src/RocketJsDemo.js
@@ -250,6 +250,7 @@ export class RocketJsDemo extends LitElement {
         background-color: #eee;
         width: 100%;
         overflow: hidden;
+        z-index: 0;
       }
 
       #resize {