Adaptive Web Design
Responsive website design (also sometimes called adaptive web design) refers to websites created within a flexible grid. The reason for designing a website in this way is so that no matter what resolution, window size or device someone is using to view it, it should appear and function properly for them. If done correctly, using Cascading Style Sheets 3 (CSS3) Media Queries and HTML5, the site design should reorient and resize itself to fit a browser or device automatically.