Creating Non-Rectangular Headers

Over at Medium, Jon Moore recently identified "non-rectangular headers" as a tiny trend. A la: it's not crazy popular yet, but just you wait, kiddo.

We're talking about headers (or, more generally, any container element) that have a non-rectangular shape. Such as trapezoids, complex geometric shapes, rounded/elliptical, or even butt-cheek shaped.

Creating Non-Rectangular Headers is a post from CSS-Tricks