Inayaili de León Persson is Lead Web Designer at Canonical — the company behind Ubuntu — where she focuses on establishing and evangelising the brands’ visual direction online. Through her blog Web Designer Notebook and articles for sites like 24 Ways and Smashing Magazine, she has established herself as an advocate of clean, semantic HTML and CSS. Inayaili is a member of .net Magazine and Smashing Magazine’s Expert Panel, and the author of Pro CSS for High Traffic Websites (Apress, 2011), a book that explores the challenges of working in large teams on websites that receive considerable traffic. She’s Panamanian Portuguese, born in the USSR, and has been living in London since 2008 — her favourite city in the world. She loves cats and naps.