Who can advise how to make a beautiful interface?

Question

css

Can someone tell me how to make the interface not so ugly.



Perhaps someone can check the code (not for validity) at a logical level: did I use the classes correctly, or maybe I need to import not a class, but a class object, etc.
Code: https://github.com/MsLolita/adBlock_adFinder . - There are more pictures here.

I will be glad to any constructive criticism.

Answer 1

Purely schematically, you can do this:

Answer 2