Passage: Many HTML5 and CSS 3 features are already implemented in at least one major browser.  Modernizr determines whether the user's browser has implemented a given feature. This lets developers take advantage of new features that browsers support, yet create fallbacks for browsers that lack support. In both 2010 and 2011, Modernizr won the .net Award for Open Source App of the Year, and in 2011 one of its lead developers, Paul Irish, won the Developer of the Year award.

Question: What is one type of programming language that is supported in a web browser?
HTML5