I typically look at grid as the outermost container. It is very good at dealing with coarse layout concerns because you can constrain on both dimensions and def

I typically look at grid as the outermost container. It is very good at dealing with coarse layout concerns because you can constrain on both dimensions and define a layout per media query (or whatever). I've never been in a situation where nesting grids makes sense. Nesting flexbox obviates the need for grid in most cases.