What it is

Responsive web design is an approach to web design aimed at providing an optimal viewing and interaction experience.
This means easy reading and navigation with a minimum of resizing, panning, and scrolling across a wide range of devices.

Why you need it

Good responsive web design is a solution for today, tomorrow, and many years to come.
As technology continues to change at a rapid pace, only responsive design keeps up.
It meets the needs of all browsers, all devices, and all screen sizes.
It also eliminates the need for a separate mobile website.