Flat UI Free - Design Framework (html/css3/less/js). Flat UI is based on Bootstrap, a comfortable, responsive, and functional framework that simplifies the development of websites.
designmodo/Flat-UI is #4,554 on the bestofgithub Elo ladder, in Gold IV, with a rating of 1,542 (−39 this week). It has 15,279 stars, 3 gained in the last week.