---
title: "CSS Custom Functions and Mixins"
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---

# CSS Custom Functions and Mixins

The CSS working group (CSSWG) has decided to start working on an Editor's Draft (ED) about **CSS Custom Functions and Mixins**. These two may be the last big advantages that CSS preprocessors like [Sass](https://sass-lang.com/) have over vanilla CSS.

- [github.com/w3c/csswg-drafts/issues/9350](https://github.com/w3c/csswg-drafts/issues/9350)
    - [\#issuecomment-1939628591](https://github.com/w3c/csswg-drafts/issues/9350#issuecomment-1939628591)
- [css.oddbird.net/sasslike/mixins-functions](https://css.oddbird.net/sasslike/mixins-functions/)
- [wiki.csswg.org/spec/process](https://wiki.csswg.org/spec/process)