Stylish Extension Downloads

Technology
1

Extension/Add-on pages for Stylish:

Chrome: Stylish - Custom themes for any website - Chrome Web Store
Opera: https://addons.opera.com/en-gb/extensions/details/stylish/?display=en (WARNING: old, from 2015)
Firefox: Stylish - Custom themes for any website – Get this Extension for 🦊 Firefox (en-GB)

2

INTERNET EXPLLORER 11 ?
Body seems unclear, is it a complete sentence?

3

Remember that you can use other extensions like Tampermonkey (which supports many browsers).