Stylish Extension Downloads

Extension/Add-on pages for Stylish:

Chrome: https://chrome.google.com/webstore/detail/stylish-custom-themes-for/fjnbnpbmkenffdnngjfgmeleoegfcffe
Opera: https://addons.opera.com/en-gb/extensions/details/stylish/?display=en (WARNING: old, from 2015)
Firefox: https://addons.mozilla.org/en-GB/firefox/addon/stylish/

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

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