Modular CSS framework for building classy websites

The Classy Web Design Framework

A modular framework for rapid web development
Sparkl combines POSH markup, Bulletproof CSS and Unobtrusive JavaScript into one easy to use web development framework that makes it simple to create bulletproof websites that conform to web standards. It uses a modular framework, allowing you to use what you need and leave out what you don't.

Source : http://code.google.com/p/sparkl/