Grab this version of Foundation if you want everything in the framework in simple, vanilla CSS and JS.
A simple, lighter version that includes typography, the grid, buttons, Reveal and Interchange.*
*59kb (okay, plus dependencies).
Include or remove certain elements and define the size of columns, colors, font size and more.
Foundation is built using SCSS, and you can work with it in the same way. Check out the instructions on the Install documentation page.