# Changes to PostCSS Progressive Custom Properties

### 3.3.0

_July 7, 2024_

- Add matching rules for alt text in `content`

### 3.2.0

_March 31, 2024_

- Add matching rules for `contrast-color`

### 3.1.1

_March 13, 2024_

- Test for mixed component types in color values (e.g. `lab(100 50% 50)`)
- Allow relative color syntax in `rgba` and `hsla` color notations.

[Full CHANGELOG](https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-progressive-custom-properties/CHANGELOG.md)