Approach
- http://nicolasgallagher.com/about-html-semantics-front-end-architecture/
- http://csswizardry.com/2012/04/the-single-responsibility-principle-applied-to-css/
- http://blog.kaelig.fr/post/38377421139/principles-for-writing-good-css
Methodologies
- SMACSS: http://smacss.com/book/
- OOCSS: https://github.com/stubbornella/oocss/wiki
- BEM: http://bem.info/method/
- SUIT: https://github.com/suitcss/suit/blob/master/doc/design-principles.md
Formatting / style
- Idiomatic CSS: https://github.com/necolas/idiomatic-css