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

The addon is great to change the appearance of a website, however, it seems it canNOT be used with VK. If either Stylus or Stylish (it doesn't matter, I tried) is on, VK page elements, be it the messenger or literally any other page, either move up and away from the view, or the browser shows the page with no CSS or HTML formatting active, just plain text. This only happens on Firefox, too, on all Chromium-based browsers, VK works fine with both Stylish and Stylus. It also doesn't matter if a VK-specific style is active or not, the pages break even with no styles active. This addon breaks only VK pages, all other websites work as they should.

Great add-on. userstyles.org website appears to be stable now.

It's impossible to write a style when using a 4k landscape monitor and a 1080p portrait monitor. The UI becomes unusable and I'm very close to uninstalling. I spent about 20 minutes trying to understand what the issue was until realizing everything is so stretched wide that only the number box is visible. Extension is unusable garbage. 👎

https://imgur.com/R253s09
https://imgur.com/OwbVAdI

rsth

Perfect! I needed something to hide the cookie policy dialog on amazon.it and it took me just one minute to do it using this web-ext.