I'm trying to put arbitrary content inside a dropdown in the nav bar for Zurb Foundation 5. Essentially, all I want is a login button that opens a login form dropdown. It seems that Foundation only supports <ul> lists for dropdowns in the top bar, even though dropdowns outside of the nav bar let you use any content with a f-dropdown content class.
This is pretty simple to accomplish with Bootstrap, but I was under the impression that Foundation is designed to be more customizable. Surely this is possible? Another example use case is the StackExchange logo dropdown - it contains various scrollable content, including a search form. How can something like that be built in Foundation?