Yes. See https://robertheaton.com/2018/08/16/stylish-is-back-and-you-still-shouldnt-use-it/ https://robertheaton.com/2018/08/16/stylish-is-back-and-you-... Use

Yes. See https://robertheaton.com/2018/08/16/stylish-is-back-and-you-still-shouldnt-use-it/ https://robertheaton.com/2018/08/16/stylish-is-back-and-you-... Use Stylus (https://addons.mozilla.org/en-US/firefox/addon/styl-us/ https://addons.mozilla.org/en-US/firefox/addon/styl-us/) instead.