How to permanently add CSS to some pages using Firefox?

How to permanently add CSS to some pages using Firefox?

Say, I want to change the font or background of a page I frequent using Firefox.

How to do that?


Solution 1:

There's a great extension called Stylish that does exactly what you're looking for. It allows you to add custom CSS to the pages you visit.

Solution 2:

https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/