When I open the style editor, the window is kinda small (likely something I did a long time ago). Is there a way to change it to a larger one (the size of the opened firefox window would be nice)?

Не работает автодобор. Не понимает в классах знак "+".

Without a doubt, one of the most useful extensions on the web. It's easy to use, robustly functional, and unobtrusive.