The original concept of Cascading Style Sheets was proposed in 1994 by H�kon Wium Lie who later headed the CSS development team at W3C with Bert Bos. While style sheets had been around since the early 1990s, CSS became the first concept which included the "cascading" method. This allowed the document to inherit styles from more than one style sheet. The W3C published the CSS level 1 recommendation in December 1996. CSS level 2 was later released in 1998.
Today, CSS is used in conjunction with (X)HTML to create Web pages that are more semantically correct than before. CSS has also opened up a whole new world of Web site creation. One of its main advantages is the ability to make changes to one file and have it affect an entire Web site.
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