This is really great! Thanks for making it! I will say, personally, my problems with grid are usually centered around getting them to do the expected dynamic r

This is really great! Thanks for making it! I will say, personally, my problems with grid are usually centered around getting them to do the expected dynamic rearrangement, rather than just setting up the grids in the first place. It's always an MDN hunt, for me, when I want to get a grid to collapse to fewer columns rather than squish the columns (or vice-versa). But, in general, it's always nice to have simple utilities like this to simplify those rote things we do all the time. I'm sure I'll be using it sooner rather than later! One quick suggestion: if establishing grids set the state in the url, it would be trivial to send someone a link to your utility which had the grid they wanted. Not sure exactly how useful that would be, but I just figured I could pop a bunch of "standard" layouts into a text file as urls and that would make the utility easier to rely on, for me.