Håkon Wium Lie

Håkon Wium Lie (born July 26, 1965) is a Norwegian web pioneer, a standards activist, and the chairman of YesLogic, developers of Prince CSS-based PDF rendering software. He is best known for developing Cascading Style Sheets (CSS) while working with Tim Berners-Lee and Robert Cailliau at CERN in 1994. He was the chief technology officer of Opera Software from 1998 until the browser was sold to new owners in 2016. Provided by Wikipedia