Layout in CSS is hard. We’ve spent the 2 decades since the inception of CSS battling with its idea of how to lay out content on the web. When we moved from table-based layouts to CSS layouts with floats and positioning, we gained a LOT of flexibility, but we also lost things like vertical centering that tables afforded us. Floats and positioning got us a long way to making really nice looking sites, but with the advent of responsive design and fluid layouts, the struggle has been real...
