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GitHub's battle-tested CSS design system for building consistent, accessible web interfaces.
Stars
12,994
Forks
1,288
Language
SCSS
License
MIT
About
Primer CSS is the foundation of GitHub's UI, providing SCSS variables, utilities, and components used at massive scale in production. It offers a well-documented, opinionated design system that ensures visual consistency and accessibility. Developers can leverage the same framework that powers GitHub's entire web presence.
Topics
cssdesign-systemdesign-systemsframeworkmetaprimerprimer-csssassstyleguideui-components