Jane, thanks for your comment, just saw it now.
We're definitely open to feedback and we are considering bringing the CSS editor into Piny. One concern, when I think about it, is that CSS styling in React & co is very fragmented, with many different solutions such as CSS-in-JS etc... Maybe I'm just overthinking it :)
We did start with Tailwind because it is very convenient, with all styling inlined directly into HTML.