Lea Verou is an Invited Expert in the W3C CSS Working Group, the committee that designs the CSS language, and previously worked as a Developer Advocate at the W3C, the Web’s main standards organization. Currently, Lea conducts research in Human-Computer Interaction at the Massachusetts Institute of Technology (MIT). She also blogs, has spoken at over 60 international web development conferences, and enjoys coding popular open source projects to help fellow developers, such as Prism, -prefix-free, Dabblet, CSS3Test.com, Awesomplete and many more.