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

The conventional commits specification

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

Bootstrap rubygem for Rails / Sprockets / Hanami / etc

Your new Jekyll default theme.

!DEPRECATED! This was the utility project for producing the default stylesheet for the HTML converter in Asciidoctor. The source of the default stylesheet now lives in the main Asciidoctor repository.

GitLive Docs

Hugo theme ideal for Organizations to use. Built initially for the TODO site redesign.