A Responsive Website will automatically adjust according to the screen size of the device it is viewed on. In fact, most users take this technology for granted.
Considering the popularity of smartphones and tablets, non-responsive sites are at a great disadvantage because without cumbersome redirects, they can only be viewed at their best on a desktop computer.
Being a Responsive means that your Website will serves all devices with the same code and it adjusts automatically according the screen size. And here you can check some of its advantage: