We've built Sass mixins and extensions for almost every component of Foundation. Now you can write whatever markup is most semantic, most representative of what your content really is. Then, simply attach Foundation components to it in your Scss. For example, you might have a main content section and a sidebar: on a large screen you could attach eight columns to the main content, and four columns to the sidebar. If you ever want to change it later you simply change your Scss, and your markup stays the same. Pretty rad, right?