/* Fixed viewport occlusion supplements the moving form clip. It covers the
   whole left column, including the card margins, without touching the preview. */
.configuration .form-stack-cap:not([hidden]) {
 display:block;visibility:visible;z-index:4;
 background:#f4f6f5;pointer-events:none;
}
.configuration .form-stack-cap[hidden] {display:none}