Çelik gained bachelor's and master's degrees in computer science from Stanford University. He worked at Microsoft from 1997 to 2004, where he helped lead development of the Macintosh version of Internet Explorer. Between 1998 and 2003, he managed a team of software developers that designed and implemented the Tasman rendering engine for Internet Explorer for Mac 5. During his time at Microsoft he also served as their alternate representative (1998–2000) and later their representative (2001–2004) to a number of working groups at the World Wide Web Consortium (W3C); he is credited on a number of recommendations relating to XHTML and Cascading Style Sheets due to this work. While working for Microsoft, he also developed the "box model hack" that is used by web designers to work around the Internet Explorer box model bug. More information...
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