# CSS masking (mask, mask-image, mask-composite) unprefixed

Status: Baseline 2023 (Chrome 120, Safari 15.4, Firefox 53); widely available.  
Source: https://developer.mozilla.org/en-US/docs/Web/CSS/mask  
Page: https://designforai.dev/css/masking

Unprefixed `mask` lets you fade, cut and shape any element with gradients or images; combined masks (`mask-composite`) produce rings, notches and soft edges without extra DOM.

## HTML

```html
<div class="fx-022" style="aspect-ratio:16/10;background:linear-gradient(135deg,#dbeaff,#ece0ff)"></div>
```

## CSS

```css
.fx-022 {
  width: 100%;
  max-width: 400px;
  display: block;
  border-radius: 12px;
    mask: linear-gradient(#000 60%,transparent),radial-gradient(circle at 85% 20%,transparent 40px,#000 41px);
    mask-composite: intersect
}
```

Fallback: Very old WebKit needs `-webkit-mask`; evergreen browsers are fine unprefixed.

## Prompt

Use unprefixed `mask` / `mask-image` with gradients for fades and cut-outs (e.g. `mask: linear-gradient(#000 70%, transparent)` for a bottom fade), and `mask-composite: intersect|exclude` to combine layers. Prefer masks over overlay divs and pseudo-elements for fading content edges and scroll-shadow effects.