HTML and CSS Reference
Users may opt to use their own style sheets when viewing a Web page. Most often, this is
done to create a look that is easier for the user to read. Under Internet Explorer, users set
their own style using the Accessibility features under Internet Options:
In some cases, setting user styles might require a browser add-on or editing of some
preference file. However, in the case of very accessibility-oriented browsers like Opera,
rapidly switching between user styles is easily performed.