html, body, main { width: 100%; height: 100%; margin: 0; background: #000; overflow: hidden; }
main { height: 100svh; }
video { display: block; width: 100%; height: 100%; object-fit: contain; background: #000; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }