CSS Blocks by Linkedin - Blazing fast CSS for your design systems and apps

CSS Blocks is an ergonomic, component-oriented CSS authoring system that compiles to high-performance stylesheets.

By combining an opinionated authoring system, build-time analysis and rewriting of templates, and a new type of CSS optimizer, css-blocks breathes new power and ease of use into the technologies and best practices that stylesheet developers already know and love.