handle mobile dialog

Author: greggman

Assets/WebGLTemplates/BetterTemplate/index.html

@@ -24,7 +24,10 @@
         height: 100%;
         display: block;
       }
-
+      /* try to handle mobile dialog */
+      canvas + * {
+        z-index: 2;
+      }
       .logo {
           display: block;
           width: max-width: 100vw;