Jon Duckett has been designing and building web sites for over a decade, working with global brands, and has authored and co-authored over a dozen books on web design, programming, usability and accessibility. He has curated conferences about web programming and has been a web strategy consultant, often coding front ends for projects and designing architectures for back end programming. He is the author of the best-selling, HTML & CSS: Design and Build Websites and JavaScript & jQuery: Interactive Front-End Web Development.