Foundation 3 is built on ZURB's 14 years of experience at building sites and apps for the Web. We believe designing responsively — designing for all devices and any device — is the future. Foundation is our way of helping you do that. What changed in Foundation 3? Almost everything. Here's what makes Foundation, Foundation.
Foundation 3 is built with Sass, a powerful CSS preprocessor, which allows us to much more quickly develop Foundation itself, as well as sites built with it. You can use the Sass or straight CSS version of Foundation.
New button elements, new navigation types, new form styles and options, and tons of streamlining make this the fastest way to prototype responsively, and to take that code and go right to production.
Foundation is the most advanced front-end Web framework in the world. While the Framework works back all the way to IE8, we're taking advantage of new, awesome Web technology to help you build faster and better.