It was released on December 17, 1996; 24 years ago
A short history of CSS until 2016. [Much of this content showed up before as section 20 of the book Cascading Style Sheets – structuring for the Web.] The adventure of CSS begins in 1994. Håkon Wium Lie works at CERN – the support of the Web – and the Web is beginning to be utilized as a stage for electronic distributing.