Super Tool für eigene Stylesheets. Fast so gut wie userCSS von chrome.
Super tool for own style-sheets. Nearly as good as userCSS from chrome.

I have lost all my custom styles after the last firefox update, it seems like the addon folder structure has changed, is there any way to get my styles back?

Will never go back to Stylish. Thanks for your offering. You guys should seriously consider creating your own repository and drive traffic away from userstyles as it's a trash website.

Perfection. I can't imagine using a browser without this extension.

good addon, although i feel its a bit too bloated. itd be nice to trim additional resources like extra styles, keymaps, prefer bundling min js/css to help keep size down.

Вне всяких похвал, просто ОГОНЬ! Советую всем кто так или иначе работает с сайтами часто или ежедневно! По делу: можете отредактировать любой css и он будет применяться автоматом на этом сайте!

Really good. I use it to restore the old Twitch look and fonts.