- Style foundation and naming conventions: https://suitcss.github.io/
- List of CSS Style Guides: https://css-tricks.com/css-style-guides/
- BBC Web Style Guide: http://www.bbc.co.uk/gel
- Topics and sites around Atomic CSS
- Object Oriented CSS
Frameworks and libraries
The very famous CSS framework created by Twitter, as of today it is used by everybody!
adds variables, mixins, operations and functions to CSS (works as pre-processor)
CSS with super powers
the new CSS kid in town!