/**
 * Stärkentest embed iframe.
 *
 * Self-enqueued by the [vm_staerken_test_embed] shortcode wherever it renders.
 * Height is driven by the app via the staerkentest:resize postMessage (handled
 * in listener.js); min-height keeps the frame from collapsing before the first
 * resize message arrives.
 */
.vm-staerken-embed {
  display: block;
  width: 100%;
  min-height: 600px;
  border: 0;
}