Stylish is a free Mozilla extension that allows for the manipulation of web pages and XUL application user interfaces through the use of CSS. The "userstyles", as they are called, are available locally or from centralized web-site , which allows style sharing. It is available for Mozilla Firefox, Mozilla Thunderbird, and Flock.
The stylesheets made for Stylish are saved in a location, and then inserted when the page is visited. Typically, users would have to insert an
after every rule declaration to override default styles on web pages.
Comparison to Greasemonkey
It is often compared to Greasemonkey
. Furthermore, the style repository at userstyles.org allows you to add custom made stylesheets as Greasemonkey scripts.
Below are some examples of Stylish user styles being applied to web pages.