I don't want to discourage people from playing around with CSS, or even from trying to make scrambled eggs with their hands tied behind their backs. It's good for people to challenge themselves in all kinds of creative ways. But this is supposed to be Hacker News. Making icons in CSS hasn't been newsworthy in a very long time, and I think it's lamentable that something like this is at the top of the home page while vastly more interesting things (like https://news.ycombinator.com/item?id=8224972) languish in obscurity.