Responsive web design is a web design technique that uses fluid, proportion-based grids, flexible images and media queries to create layouts that provide an optimal viewing experience across a wide range of devices (from mobile phones to desktop computer monitors).

A responsive web design allows the page layout to change, or respond, according to the device it is being viewed on. This means that when a browser window is widened or narrowed, the page’s content will automatically be reflowed so that all elements are visible without horizontal scrollin