Mat “Wilto” Marquis is a designer-slash-developer working at Filament Group, in Boston. Mat is a member of the jQuery Mobile team, an active member of the open source community, and a contributor to A List Apart where he also acts as technical editor and curator. Mat’s passion for responsive Web design has led him to chair the Responsive Images Community Group, where he’s helping the web design community deal with the complex topic of responsive images and working towards a standardized solution with the W3C.