Håkon Wium Lie 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.
Håkon Wium Lie, March 2009
Cascading Style Sheets (CSS) is a style sheet language used for specifying the presentation and styling of a document written in a markup language such as HTML or XML. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.
Example of CSS source code
Håkon Wium Lie, chief technical officer of the Opera Software company and co-creator of the CSS web standards