What is responsive design? The aim of responsive design is to thoughtfully create one design for multiple devices (i.e. iPhone, iPad, etc.) and screen sizes. Instead of building a mobile site, a site specifically for tablets, and a standard desktop site, you provide one design that "responds" to the user's device and displays the content accordingly. Our newest launch, Silicato Development, utilizes modern web design techniques including HTML5, responsive design, CSS3, and media queries.