Whether used for a vast and loose affiliation of local chapter websites or a closely-held pool of topical blogs, WordPress Multisite can be an efficient and effective tool — provided it’s done right.

Flexbox is the easiset way to create layouts to display that content attractively in any theme, on any size screen. The new CSS Grid Specification is the layout tool we've wanted since the Web was born. I'll show you the simplest implementation: auto-filling grid cells in the largest number of columns that fits in the content area.