:root { color-scheme: dark; background: #000; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: #000; }
video {
  position: fixed;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  height: 100dvh;
  object-fit: cover;
  object-position: center;
  border: 0;
  outline: 0;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}