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

The conventional commits specification

The U.S. Web Design System helps the federal government build fast, accessible, mobile-friendly websites.

The mqtt.org website

Minima is a one-size-fits-all Jekyll theme for writers.

The most advanced, yet intuitive, grid system available for Sass or Stylus

A boutique Jekyll theme for hackers, nerds, and academics

An introduction to the architecture and design of the Git content manager

Beyond dark mode for Google Docs

The Filecoin protocol specification

User interface