I've played around a bit with CSS grid, and to me it seemed like it would just make this kind of grid frameworks unnecessary. Everything I see on that page are native CSS grid features.<p>After looking at the CSS, it seems entirely redundant. It's 36 lines, and only contains the basic grid setup you'd do by hand. Using CSS grid directly would not be hardly more difficult or verbose, and far more powerful than restricting yourself to the subset used in this.<p>What I also find strange is that this project still calculates the column width based on percentages, instead of the native support for fractions in CSS grid.