Editing Style sheet (web development) (section)

===Customization===
{{See also|CSS#Sources}}
If a page's layout information is stored externally, a user can decide to disable the layout information entirely, leaving the site's bare content still in a readable form. Site authors may also offer multiple style sheets, which can be used to completely change the appearance of the site without altering any of its content.

Most modern web browsers also allow the user to define their own style sheet, which can include rules that override the author's layout rules. This allows users, for example, to bold every hyperlink on every page they visit. Browser extensions like [[Stylish (software)|Stylish]] and [[Stylus (browser extension)|Stylus]] have been created to facilitate management of such user style sheets.