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CSSThe De?nitive GuideOther resources from O’ReillyRelated titlesHTML & XHTML: TheDefinitive GuideJavaScript: The DefinitiveGuideLearning JavaScriptDynamic HTML: TheDefinitive ReferenceJavaScript & DHTMLCookbook?Web Design in a is more than plete catalog of O’Reilly ’ll also find links to news, events, articles, weblogs, samplechapters, and code the essential portal for developers interested inopen and emerging technologies, including new platforms, pro-gramming languages, and operating ’Reilly brings diverse innovators together to nurture the ideasthat sparkrevolutionary industries. We specialize in document-ing the latest tools and systems, translating the innovator’sknowledge into useful skills for those in the trenches. Visitconferences. for our ing Bookshelf (safari.) is the premier online refer-ence library for programmers and IT professionals. Conductsearches across more than 1,000 books. Subscribers can zero inon answers to time-critical questions in a matter of the books on your Bookshelf from cover to cover or sim-ply flip to the page you need. Try it today for De?nitive GuideTHIRD EDITIONEric A. MeyerBeijing?Cambridge?Farnham?K?ln?Sebastopol?Taipei?TokyoCSS: The Definitive Guide, Third Editionby Eric A. MeyerCopyright ? 2007, 2004, 2000 O’Reilly Media, Inc. All rights in the United States of by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA ’Reilly books may be purchased for educational, business, or sales promotional use. Online editionsare also available for most titles (safari.). For more information, contact ourcorporate/institutional sales department: (800) 998-9938 ******@.Editor:Tatiana ApandiProduction Editor:Rachel MonaghanCopyeditor:Rachel MonaghanProofreader:Laurel . RumaIndexer:Reg AubryCover Designer:Karen MontgomeryInterior Designer:David FutatoIllustrators:Robert Romano and Jessamyn ReadPri