There are a lot of classless CSS frameworks and comparing them is annoying. I wanted a single page where I could flip through them all against the same HTML.
Spend a few minutes clicking through themes and you'll start to notice
differences. Some apply a max-width to the body and center the
content. Some style the <nav> element, some ignore it entirely.
Some have dark mode, some don't.
The site is built with Astro. Themes are loaded dynamically from their CDNs based on a query parameter. The site itself has no opinion on styling (except for the nav).