What is a responsive web design? It is an approach that shapes your website to the screen size and allows a user to have a clear view of your site. It also means users can have viewing experience if they use the mobile phone or desktop computer. Visiting a Smartphone, a Facebook or laptop means you notice on the device screen the same images, content and layout. This shows the website design is responsive.
Having a responsive website design means it has one URL and HTML in all devices and this helps Google to find, index, crawl and organize the content easily. In this way, the searchers are offered your best content.