.wp-caption-text {
  opacity: 0.5;
  font-size: small;
}

.wp-block-post-content iframe {
  aspect-ratio: 16/9;
  width: 100%;
  height: auto;
}

:root :where(.is-layout-constrained) > *,
h2, h3, h4 {
  margin-block-start: 0.2em;
  margin-block-end: 0.2em;
  text-transform: none;
}