Frosted Glass with backdrop-filter

The core CSS

.glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

Three parts do the work:

1. A translucent background — without it, nothing shows through
2. blur — the frosting itself
3. saturate — boosts the colors behind the element, imitating the way glass refracts light

Browser support

Browser	Support
Chrome 76+	✅
Safari 9+	needs the -webkit- prefix
Firefox 103+	✅

Performance caveat

backdrop-filter promotes the element to a GPU compositing layer, so don’t scatter it across large areas or scrolling will drop frames. Where it belongs: navbars, cards, modals.

Going further: a noise overlay

Plain frosted glass looks a little plastic. A layer of SVG noise on top reads as more “real”:

.glass::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/noise.svg');
  opacity: 0.04;
  pointer-events: none;
}