increase z-index to max value

Author: jmlag

sass/content.scss

@@ -5,7 +5,7 @@
   width: 100%;
   height: 100%;
   background: rgba(255, 255, 255, 0.6);
-  z-index: 1000000;
+  z-index: 2147483647;
   display: none;
   cursor: crosshair;
 }