Change page UI appearance to a clean style

[yjf2002ghty]

Currently fairyground uses a dirty UI style, which makes all elements visible in a division, making it look bloated.
A clean UI style is what most modern webpage uses, especially when there are a lot of elements present, which put elements into different levels of divisions (for example: menus, side bars, popups, expandable items, etc.). Changing UI to a clean style will make it look better and more user friendly.

[ianfab]

Definitely a pain point currently.

Recently I have done some experiments with LLMs to either refactor or rewrite fairyground for UI improevements, mostly just to get some feeling how it could look like. Was only a quick experiment, so I didn't really get very far, but just for reference here the branches with styling tweaks or a rewrite from scratch. They are only partly functional.