Chapter 5. Cascading Style Sheets
As the Web matured through the 1990s, website developers increasingly needed a consistent and flexible way to control the appearance of HTML documents; the collection of random, vendor-specific tag parameters available at the time simply would not do. After reviewing several competing proposals, W3C eventually settled on Cascading Style Sheets (CSS), a fairly simple text-based page appearance description language proposed by Håkon Wium Lie.
The initial CSS level 1 specification saw the light of day by the end of 1996,[142] but further revisions of this document continued until 2008. The initial draft of CSS level 2 followed in December 1998 and has yet to be finalized as of 2011. The work on the most recent iteration, ...
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