/* Embedded YouTube walkthroughs: full width of the content column, 16:9, no fixed height. */
.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 0.6em 0 0.2em;
  border-radius: 4px;
  overflow: hidden;
  background: #000;
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}