This is a wonderful library but it falls short on one major aspect which limits its design capabilities. Currently a block spanning N columns on a desktop must span N columns or 1 column on a mobile device. This means you can't have a 6x2 grid become a 2 by 6 grid on mobiles. It will have to be 12 blocks stacked on top of one another.

Inuit is another framework that allows for this though it lacks in documentation and a user friendly website.