CSS Video Tutorial

Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language.  CSS is designed primarily to enable the separation of document content from document presentation, including aspects such as the layout, colors, and fonts. 

The CSS specification describes a priority scheme to determine which style rules apply if more than one rule matches against a particular element. In this so-called cascade, priorities (or weights) are calculated and assigned to rules, so that the results are predictable.

History of CSS

  1. CSS was first proposed by Håkon Wium Lie on October 10, 1994.
  2. At the time, Lie was working with Tim Berners-Lee at CERN.
  3. Several other style sheet languages for the web were proposed around the same time, and discussions on public mailing lists and inside World Wide Web Consortium resulted in the first W3C CSS Recommendation (CSS1) being released in 1996.


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