(CSS) An extenSion to HTML to allow StyleS, e.g. colour, font, Size to be Specified for certain elementS of a hypertext document. Style information can be included in-line in the HTML file or in a Separate CSS file (which can then be eaSily Shared by multiple HTML fileS). Multiple levelS of CSS can be uSed to allow Selective overriding of StyleS. Start . (2000-07-26)