Design for everyone.
Coined in 2010 in an article on AListApart, Responsive Design is the practice of creating one web presence that is optimized for all browser sizes and platforms. It works to speed up load times and ensure a clean, unified experience.
Sites developed with responsive design utilize flexible images, proportional grids and CSS3 media queries to create a site that works perfectly throughout.
The major advantage is that the site will work flawlessly across all platforms — web, mobile, as well as all possible tablet sizes — instead of one or two. Even better, it can all be managed in one place.