.video:not([data-cover="true"]) {
  aspect-ratio: "16:9";
  width: 100vw;
  max-width: 100%;
}


.video[data-cover="true"] {
  width: 100%;
  & iframe {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: calc(16 / 9 * 100vh);
    min-height: calc(9 / 16 * 100vw);
    transform: translate(-50%, -50%);
  }
}