There's also someone who does incredible artwork using only hand-written CSS:
http://diana-adrianne.com/purecss-francine/
How it works:
http://diana-adrianne.com/purecss-francine/
How it works:
https://bubblin.io/cover/abcd-animal-book-by-judith-neumann#...
The upper link can absolutely grind Android Chrome to a halt.
Force closing the app doesn't fix it either, as chrome reopens the last tab you had open, so the only way out is to completely wipe the browser data which is a little annoying.