FlexGRID is a mobile-first, responsive grid system, baked with equal column height goodness.
The idea came about when I couldn't find a responsive grid system I could use that worked like FlexGRID. With full-width row backgrounds, equal column heights and cross-browser compatibility in mind, I set to work.
Why is a responsive grid system with equal column heights such a big deal for me? I'm against using hacks to make things work, and that includes using hacks in grid systems to make columns look the same height. Instead I developed FlexGRID.