trying out a regular OHB this time, but i will provide references in advance. check out some of this work by lynn fisher who managed to create some pretty crazy art with just one div and css pseudo-element/box shadow abuse

https://a.singlediv.com/
https://www.youtube.com/watch?v=l7VUhEdM2aY


the bitpack of course will limit you to using one element for the body of your html, in addition to having a ~theme~ which will be revealed when the battle starts!