09.12. 10 good reasons why to learn a css meta language like sass or less - Mayflower Bloghttp://blog.mayflower.de/archives/802-09.12.-10-good-reasons-why-to-learn-a-css-meta-language-like-sass-or-less.html
2 Pseudos language de génération de CSS permetant l’utilisation de variable, d'héritage, de boucles, etc
SASS et LESS