*:where(html) {
  --backdrop-brightness-0: brightness(0);
  --backdrop-brightness-50: brightness(0.5);
  --backdrop-brightness-75: brightness(0.75);
  --backdrop-brightness-90: brightness(0.9);
  --backdrop-brightness-95: brightness(0.95);
  --backdrop-brightness-100: brightness(1);
  --backdrop-brightness-105: brightness(1.05);
  --backdrop-brightness-110: brightness(1.1);
  --backdrop-brightness-125: brightness(1.25);
  --backdrop-brightness-150: brightness(1.5);
  --backdrop-brightness-200: brightness(2);
}