What is Responsive Web Design..?

[Joyadelfin]

Hello friends,

I would like to know that What is Responsive Web Design..?

[searchenginewings]

Responsive Web design is the approach that suggests 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 intelligent use of CSS media queries.

[David-Smith]

Responsive web design is an approach to web design that makes web pages render well on a variety of devices and window or screen sizes. Recent work also considers the viewer proximity as part of the viewing context as an extension for RWD.