.play-block-editor-preview {
    width: 100%;
  aspect-ratio: 16 / 9; /* 16:9 aspect ratio */
  /* Remove min-height if you want the ratio to handle everything. */
  position: relative; /* If you’re absolutely positioning elements inside. */
}

.custom-play-block-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9; /* 16:9 aspect ratio */
  /* Remove min-height if you want the ratio to handle everything. */
  position: relative; /* If you’re absolutely positioning elements inside. */
}