I found a recent discussion on Reddit’s r/webdev interesting: how might one make a container appear to have a slanted bottom border, as shown above? The top-voted answer, while clever, only worked on fixed-width containers, and used a lot of CSS to achieve the effect; by sacrificing a small amount of backwards compatibility, I think there’s a better option.
This mini-lesson might be considered part of a push to re-imagine website layout: for the longest time we’ve been reliant on three-column grids and 90° angles. But with a little imagination, we can do so much more: