Estelle Weyl is a Front End Engineer and Open Web evangelist. Estelle started her professional life in architecture and then managed teen health programs. In 2000, she took the natural step of becoming a web standardista. She has consulted for Kodak Gallery, SurveyMonkey, Samsung, Yahoo, Visa, and Apple, among others. Estelle is the author of Mobile HTML5, CSS Transitions & Animations, and FlexBox in CSS, and co-author of Web Performance Day Book, CSS3: The Definitive Guide, and HTML5 and CSS3 for the Real World, with her books translated into 15 languages. She has spoken at over 100 conferences in over 17 countries. While not coding, Estelle works in construction, de-hippifying her 1960s throwback abode.