Primer CSS

Primer CSS

Design system for creating user interfaces on GitHub.

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Primer is a design system tailored for building user interfaces specifically for GitHub. It offers a set of guidelines and resources that elevate the design process, ensuring consistency and accessibility across projects.

With Primer, designers develop visually appealing interfaces while maintaining brand identity. The comprehensive icon library and design tokens support a cohesive look and feel.

Teams can collaborate effectively, integrating user feedback into their work. This system simplifies the workflow, allowing designers to focus on creativity and usability. By using Primer, organizations can enhance user experiences across various platforms and applications, fostering a unified interaction with GitHub products.


  • Design consistent user interfaces
  • Create accessible web applications
  • Develop branding guidelines for GitHub
  • Implement user feedback in designs
  • Build responsive digital experiences
  • Collaborate on design projects seamlessly
  • Utilize design tokens for styling
  • Access a library of customizable icons
  • Enhance user experience across platforms
  • Simplify the design process for teams
  • Streamlines UI design for GitHub
  • Ensures brand consistency
  • Provides accessibility guidelines
  • Includes a comprehensive icon library
  • Facilitates collaboration among design teams

Design project management Digital design tools User experience tools

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