With Storefront Blocks you can choose how to display your blocks on Desktop, Tablet and Phones

Here’s the settings that come as part of Storefront Blocks. Further on down the page I’ve put together a couple of live demos for you to see.

Grid set to have 4 columns on Desktop, 3 columns on a Tablet, and 2 columns on Phone

Grid set to have 3 columns on a Desktop, 2 columns on Tablet and 1 column on a Phone