Install Changelog


The design system that powers GitHub

Install Primer 10.2.0

Primer has undergone a lot of changes in the past 18 months. We've been consolidating and updating the CSS to make more resuable and flexible styles, we turned Primer into a monorepo and improved our build process, and we've been building a new documentation website that we'll making public soon. In the meantime, you can still view the old documentation website, or you can find up-to-date documentation for styles within the or docs folder of each Primer module.


Primer CSS includes 23 packages that are grouped into 3 core meta-packages for easy install. Each package and meta-package is independently versioned and distributed via npm, so it's easy to include all or part of Primer within your own project.