Awesome site. I did the same thing, started with simplex and adapted as needed. However, i cannot figure out how to get a responsive nav. i've tried js scripts, but somehow it either hides the sub menus in desktop mode or does not show the toggle menu in mobile mode. very frustrating. this is my first attempt at responsive design, could you outline how you acheived your result? did you simple rewrite the main-nav in the css or did you include a specific script for responsive toggle?
if you feel like sharing, I'd really appreciate the file or a blow by blow
