Changing Foundation's topbar breakpoint with custom CSS?

I'm trying to move from Bootstrap to Foundation, but I'm having an issue in trying to identify how to exactly change the breakpoint for the topbar in Foundation. I'm using a a CDN version of the minified CSS for Foundation, so I do NOT have access to the settings SASS file to modify this. Is there a quick CSS override workaround? So far my searches on here, and Google, haven't turned up a working solution.