.ad-banner {
  display: block;
  margin: 1rem 0;
  border-radius: var(--wa-border-radius-m);
  overflow: hidden;
}

.ad-banner__image {
  display: block;
  width: 100%;
  height: auto;
  /* A square or tall creative must not turn the banner slot into wallpaper —
     cap the height and crop, like a real leaderboard placement. */
  max-height: 240px;
  object-fit: cover;
  object-position: center;
}