What the heck, HTML and CSS?
paulmolluzzo.github.io
paulmolluzzo.github.io
Obviously @mdo can write whatever he likes on his projects, and it doesn't feel right to "correct him" with a pull request if that's how he chose to write the resource.
In the original HN post[1] there were a couple of comments about how some people might want to share this with kids who are learning to code. If they want to share the knowledge without a couple of "bad words" spoiling it now they have a way.