Responsive web design (RWD) is a web design approach to provide an optimal
viewing experience—easy reading and navigation with a minimum of resizing,
panning, and scrolling—across a wide range of devices (from desktop computer
monitors to mobile phones).
A new release, Bootstrap 3 promises to be "mobile-first". This new lightweight
version of the popular front-end framework is expected to be released in
2013. Bootstrap 3 will also include new CSS elements such as panels and