Responsive Web design is the approach that suggests that design and development should respond to the user's behavior and environment based on screen size, platform and orientation. The practice consists of a mix of flexible grids and layouts, images and an intelligent use of CSS media queries. As the user switches from their laptop to iPad, the website should automatically switch to accommodate for resolution, image size and scripting abilities.
Day by day, the number of devices, platforms,
and browsers that need to work with your site grows. Responsive web design represents a fundamental shift in how we'll build websites for the decade to come.