# Primer CSS

CSS and Sass implementation of GitHub's Primer design system, distributed as the npm package @primer/css.


Source: https://findsoftware.frbit.cloud/primer-css/
Last reviewed: 2026-10-28
Listed since: 2026-10-28

## Record

### Links

- home: https://primer.style/css
- repository: https://github.com/primer/css

### Identity

- status: active
- maintainer: GitHub, Inc.
- maintainerType: company
- parent: unknown
- firstRelease: 2015
- hqCountry: unknown

### Kind

- category: css-framework
- hosting: not applicable
- language: css
- runtime: unknown
- runtimeMin: not applicable
- basedOn: unknown

### Content

- contentStore: not applicable
- databases: not applicable
- adminUi: not applicable
- headlessApi: not applicable
- templating: not applicable
- i18n: not applicable

### Rendering and deploy

- runsAs: unknown
- renderingModes: not applicable
- installMethod: npm

### License

- licenseModel: open-source
- license: MIT

### Releases

- currentMajor: 22
- latestReleaseDate: 2026-09-25

### Adoption

- githubStargazers: 13044
- packagistDownloads: not applicable
- npmWeeklyDownloads: 102284
- contributors: 173
- pluginCount: unknown
- packagistMonthlyDownloads: unknown
- ecosystemsMonthlyDownloads: unknown
- httpArchiveSites: unknown
- wordpressActiveInstalls: unknown
- dependentRepos: 1173
- dependentPackages: 75

### Sources

- urls: https://github.com/primer/css/blob/main/README.md (read 2026-10-28)
- urls: https://github.com/primer/css (read 2026-10-28)
- category: https://github.com/primer/css/blob/main/README.md (read 2026-10-28)
- language: https://github.com/primer/css/blob/main/README.md (read 2026-10-28)
- installMethod: https://github.com/primer/css/blob/main/README.md (read 2026-10-28)
- firstRelease: https://github.com/primer/css/releases/tag/v2.0.2 (read 2026-10-28)
- maintainer: https://github.com/about (read 2026-10-28)
- license: https://github.com/primer/css/blob/main/LICENSE (read 2026-10-28)
- currentMajor: https://registry.npmjs.org/@primer%2Fcss (read 2026-10-28)
- latestReleaseDate: https://registry.npmjs.org/@primer%2Fcss (read 2026-10-28)
- githubStargazers: https://github.com/primer/css (read 2026-10-28)
- contributors: https://github.com/primer/css (read 2026-10-28)
- npmWeeklyDownloads: https://api.npmjs.org/downloads/range/2026-09-28:2026-10-04/@primer/css (read 2026-10-28)
- dependentPackages: https://packages.ecosyste.ms/api/v1/registries/npmjs.org/packages/@primer%2Fcss (read 2026-10-28)
- dependentRepos: https://packages.ecosyste.ms/api/v1/registries/npmjs.org/packages/@primer%2Fcss (read 2026-10-28)

## Notes

Primer CSS is the CSS implementation of GitHub's Primer design system. It is published as the npm package `@primer/css`, written in Sass using SCSS syntax, and installed with npm.

## Worth knowing

The repository's README says the project is in KTLO (keep the lights on) mode. It asks users to use the existing utility classes where needed and points to [Primer React](https://github.com/primer/react) or, if necessary, Primer ViewComponents for more complete patterns that include styling and markup.

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Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Attributes are recorded, never scored; absent means unknown.
Credit, in full: FindSoftware, CC BY 4.0