Responsive Inspector
min-device-pixel-ratio test
What’s your device’s min-device-pixel-ratio?
Responsive Design : Le guide de référence pour les SEOs
Web Design réactif Article traduit de Seomoz.org : Responsive Web Design: The Ultimate Guide for Online Marketers http://www.seomoz.org/ugc/responsive-web-design-the-ultimate-guide-for-online-marketers
Golden Grid System
Four features Columns, gutters, a baseline and a script.