Responsive web Design is a collection of techniques that allow a website to flex and adapt to the size of screen it’s being viewed on. Every Customer Now –a-Days Wants a Mobile Version of their Website due to Excess use of Smartphones. It’s very Much Necessary Now-a-Days. One design for the BlackBerry, another for the iPhone, the iPad, netbook, Kindle — and all screen resolutions must be compatible, too. Responsive Web design has become an essential tool for anyone with a digital presence. With the development of advanced mobile phones, tablets and other versatile processing gadgets, more individuals are utilizing Smaller Screens to see site pages. These websites have to also consider the mobile-first index just announced by Google in April 2018. As more small businesses increase their mobile presence, their website, e-Commerce, Google Business page, social media pages and other assets have to be easily accessible across all devices.