Foundation and the Master Style Setting
Ensure that all of your pages inside your project are set to use the Master Theme Style.
This will ensure that every webpage loads the same exact foundation.css file from theme. If a page is not set to use the master style, then a copy of the foundation.css file will be used for that page. This means that the browser has to download this entire file again when it should not have to. Browser caching for the win!!!!
Now go forth and make your websites great!