I am just starting to play with more "advanced" css. and for aware, I find flexbox is an easy solution as long as I don't need to have cells take more than 1 row. CSS grid seems to offer a lot of options to build a "cool" query that spans multiple rows.
I am having some difficulty wrapping my arms around Pinegrow. There seems to be more stuff than I need and too much is "hidden" . But perhaps its just a learning curve.
my 0.02 cents worth
Bruce