Number of people using their mobile to browse websites is significant. We have felt the winds of change, and they insist on developing websites that work perfectly across different devices and browsers. Responsive website development is an approach that allows developers & programmers to design websites that work perfectly on PCs, laptops, tablets, and smartphones. These website designs which are compatible with screen width of the smart phone, net books, tablets, widescreen monitors and this can be scalable even to wide screen smart TV.
Good part is no need of independent websites to be designed for various devices, and even to the person browsing should not be limited with statement like best viewable at " n X n px" resolution of the screen. The design and layout should fit dynamically on to the screen width , with no horizontal scroll bar which causes the bounceoff traffic on a small screen of smart phones since its very disturbing to read with horizontal scroll bar on hand held devices too.
The fluid responsive design resolves these limitations where only one website is designed for all devices which reduces the maintenance and development cost also with a flexibility to adopt to any envirement.