Cascading Style Sheetn. (CSS, abbr.)An extension of Hypertext Markup Language (HTML) that governs the appearance of a document.
NotesCSS version 1 became a World Wide Web Consortium (W3C) Recommendation in 1996. CSS2 became a W3C Recommendation in 1998. Although CSS can be used with extensible markup language (XML), it is generally used with HTML documents; Extensible Stylesheet Language (XSL) is superseding CSS for formatting XML documents.
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