YAML : A modular CSS framework for truly flexible, accessible and responsive websites
Type-a-file : Below you’ll find some text marked up with the core elements of Type-a-file. View the source code to find out how to use them on your own site. This e...
Diagnostic.css : Diagnostic.css is a stylesheet which allows the user to test for common errors in a page's markup.
Also : https://github.com/karlgroves/diagnostic.css
xCSS : xCSS bases on CSS and empowers a straightforward and object-oriented workflow when developing complex style cascades.
Compass : Compass is an open-source CSS Authoring Framework.
