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Css

Primer is GitHub's design system. This is the CSS implementation

Install / Use

/learn @primer/Css
About this skill

Quality Score

0/100

Category

Design

Supported Platforms

Universal

README

Primer CSS

The CSS implementation of GitHub's Primer Design System

npm package build status contributors graph last commit license

:warning: This project is in KTLO mode! Use existing utility classes from this project where needed. For more complete patterns that include styling and markup, please use primer/react or, if necessary, primer/view_components.

Documentation

Our documentation site lives at primer.style/css. You'll be able to find detailed documentation on getting started, all of the components, our theme, our principles, and more.

Install

This repository is distributed with npm. After installing npm, you can install @primer/css with this command:

npm install --save @primer/css

Usage

The included source files are written in Sass using SCSS syntax. Once installed, you can add your project's node_modules directory to your Sass include paths (AKA load paths in Ruby), then import it like this:

@import "@primer/css/index.scss";

You can import individual Primer modules directly from the @primer/css package:

@import "@primer/css/core/index.scss";
@import "@primer/css/product/index.scss";
@import "@primer/css/marketing/index.scss";

Development

See DEVELOP.md for development docs.

Releasing (for GitHub staff)

You can find docs about our release process in RELEASING.md.

License

MIT © GitHub

View on GitHub
GitHub Stars12.9k
CategoryDesign
Updated11h ago
Forks1.3k

Languages

SCSS

Security Score

100/100

Audited on Mar 28, 2026

No findings