Take a look around, a few things have changed.
Now you can dynamically load HTML content based on screen capabilities
The best to present navigational structure on a mobile-first site
This is a twelve column section in a row. Each of these includes a div.panel element so you can see where the columns are - it's not required at all for the grid.
We're stoked you want to try Foundation! To get going, this file (index.html) includes some basic styles you can modify, play around with, or totally destroy to get going.
Once you've exhausted the fun in this document, you should check out: