Functional CSS for the future

Chrome extension to see a quick overview of styles on the current page Chrome Web Store: https://chrome.google.com/webstore/detail/css-peeper/mbnbehikldjhnfehhnaidhjhoofhpehk

Create atomic design ( http://bradfrost.com/blog/post/atomic-web-design/ ) systems with Pattern Lab.

The NEW Responsive 960 Grid CSS Framework That You’re Already Familiar With.

A folding grid for responsive design.

… adapts your existing HTML images for mobile devices. No mark-up changes needed. Just drop it in and forget about it.

… a Beautiful Boilerplate for Responsive, Mobile-Friendly Development […] a small collection of CSS & JS files that can help you rapidly develop sites that look beautiful at any size, be it a 17" laptop screen or an iPhone.