Thank you! I put a lot of effort into designing this page, and I've recently made all the custom styling (along w/ my font creation pipeline) open source, if you wanna take a look:
gitlab.com/datagoblin/monogram
The page code is under "source/itch/". It's a bit disorganized because it's mostly copied/pasted directly from the built-in editors here on itch.io, but it's all there!