Well, I use Stylus, and it works fine on Android (but you need to use a "custom addon collection" to add it, which is only available on Beta and Nightly). I see

Well, I use Stylus, and it works fine on Android (but you need to use a "custom addon collection" to add it, which is only available on Beta and Nightly). I see no reason why Stylish wouldn't also work. https://blog.mozilla.org/addons/2020/09/29/expanded-extension-support-in-firefox-for-android-nightly/ https://blog.mozilla.org/addons/2020/09/29/expanded-extensio...