[codepen] CSS only menu

I really dig @Oleg Frolov's menu shot and inspired by this awesome CSS post (http://codepen.io/jakealbaugh/post/codepen-community) by Jake Albaugh so I attempted to build it using only css, using 2 :target hack.

Checkout the codepen here:
http://codepen.io/d4rek/full/PNRMop