Here are a few important key features why I'm switching from the basic 960 grid to responsive!
Flexible, efficient layout.
You've probably used a grid framework before — we think you'll like this one. It's a 12-column flexible grid that can scale out to an arbitrary size (defined by the max-width of the row) that's also easily nested, so you can build out complicated layouts without creating a lot of custom elements. And when the Grid isn't enough for your site, it just gets out of the way.
Mockups don't tell a story. Build a prototype in no time.
The difference between a good site and a great site is iteration — building something, playing with it, refining it. In Foundation we've included dozens of styles to help you quickly prototype a site; multiple button sizes and styles, tabs, custom form elements, modal dialogs, image sliders and a lot more. All of the prototype elements are production-ready code, and easy to style up.
Build for the future.
Mobile devices are already eclipsing desktops in adoption and internet use — that's why Foundation was built from the ground up to support any kind of device, any size screen, with any resolution. You can get going quickly by building once for all devices, or you can create a site tailored to a specific experience. We've even included CSS styles to hide and show elements on different device types, so you can easily turn pieces on and off for each experience.