After a light-hearted challenge in work, I started trying to replicate a Squircle in CSS. This is a bit tricky as it can't be created using simple border-radius.
Fortunately, somebody else already did the hard work. There's a project on GitHub by Robert Dougan which contains a fairly accurate squircle (good enough for screen, anyway). I decided to reproduce it reducing the number of elements used.
Here it is using pseudo-elements on a paragraph and a link tag.
Now to convince the designers at work to use it.