When you’re working on a responsive design and considering smaller, more compact screen sizes, a minimal nav is generally the way to go. Because many sites rely on a top navigation with more than one or two options, dropdowns are often the best choice in this small screen circumstance.
The problem with this dropdown approach is it can introduce some HTML or CSS bloat if you’re not careful. Enter tinynav.js, a really simple jQuery based plugin that auto converts a classic ul based navigation into a dropdown for small screens.