.banner-thumb { display: block; width: 220px; max-width: 28vw; aspect-ratio: 2 / 1; object-fit: contain; background: #edf6fd; border-radius: 6px; }
.banner-preview { display: block; width: 100%; aspect-ratio: 2 / 1; object-fit: contain; margin: 10px 0; background: #edf6fd; border-radius: 6px; }
.banner-preview[hidden] { display: none; }
.banner-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.banner-actions button { white-space: nowrap; }