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GeezerVison is showing github.com — CSS Tools

README.md

Hey there 👋!

GitHub Discussions Discord

We're building CSS Tools to enable you to use the newest features of CSS without having to worry about the browsers you're supporting.

We're doing that with PostCSS which allows us to create plugins that you can use to transform your CSS code so it's compatible with all browsers ✨.

We've created PostCSS Preset Env which packs all of these plugins together and lets you just configure and forget.

You can find the CSS features on cssdb.org which we keep up to date with the state they're, the support they have and some examples and links to get you used to that feature 🤓.

We're available through these channels:

  • Discord
  • Discussions

And if you're curious to know what we're working on or how could you contribute, the projects are always a good first stop!

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  1. postcss-plugins postcss-plugins Public

    PostCSS Tools and Plugins

    CSS 1.1k 84

  2. cssdb cssdb Public

    A database of staged CSS features

    JavaScript 547 29

Repositories

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Showing 10 of 120 repositories
  • postcss-plugins-directory Public

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    csstools/postcss-plugins-directory's past year of commit activity
    JavaScript 7 MIT 1 0 4 Updated Nov 12, 2026
  • postcss-plugins Public

    PostCSS Tools and Plugins

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    csstools/postcss-plugins's past year of commit activity
    CSS 1,061 MIT-0 84 10 (1 issue needs help) 4 Updated Nov 9, 2026
  • cssdb Public

    A database of staged CSS features

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    csstools/cssdb's past year of commit activity
    JavaScript 547 MIT-0 29 0 0 Updated Nov 9, 2026
  • stylelint-media-use-custom-media Public

    Enforce usage of custom media queries in CSS

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    csstools/stylelint-media-use-custom-media's past year of commit activity
    JavaScript 17 CC0-1.0 4 0 4 Updated Oct 31, 2026
  • stylelint-value-no-unknown-custom-properties Public

    A stylelint rule to catch usage of unknown custom properties

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    csstools/stylelint-value-no-unknown-custom-properties's past year of commit activity
    JavaScript 76 CC0-1.0 34 4 6 Updated Oct 30, 2026
  • stylelint-use-logical Public

    Enforce usage of logical properties and values in CSS

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    csstools/stylelint-use-logical's past year of commit activity
    JavaScript 76 CC0-1.0 11 7 9 Updated Oct 30, 2026
  • stylelint-use-nesting Public

    Enforce nesting when it is possible in CSS

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    csstools/stylelint-use-nesting's past year of commit activity
    JavaScript 51 CC0-1.0 11 2 5 Updated Oct 30, 2026
  • postcss-extend-rule Public

    Use the extend at-rule and functional selectors in CSS

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    csstools/postcss-extend-rule's past year of commit activity
    JavaScript 54 CC0-1.0 7 4 5 Updated Oct 19, 2026
  • postcss-sass Public

    Use Sass as a PostCSS plugin

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    csstools/postcss-sass's past year of commit activity
    JavaScript 149 CC0-1.0 31 1 2 Updated Oct 16, 2026
  • postcss-resolve-nested-selector Public

    Resolve a nested selector in a PostCSS AST

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    csstools/postcss-resolve-nested-selector's past year of commit activity
    JavaScript 13 MIT 6 0 0 Updated Oct 10, 2026
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