A style sheet format for HTML documents endorsed by the World Wide Web Consortium. CSS1 (Version 1.0) provides hundreds of layout settings that can be applied to all the subsequent HTML pages that are downloaded. CSS2 (Version 2.0) adds support for XML, oral presentations for the visually impaired, downloadable fonts and other enhancements.

CSS3 has been in ongoing development for several years and extends Version 2 with vertical text, elaborate borders and backgrounds, user interaction and speech, among the highlights. For updates, visit www.w3.org/Style/CSS/. See style sheet and XSL.

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