A responsive site page design permits a site to be available on any screen, show, or window without breaking the structure of the substance.
Mobile-friendly websites retain customer attention by delivering the content as per the device display rather than having to pinch the display to zoom in the content. Websites that are not mobile-friendly have a higher bounce rate.
Search Engine friendly :
Search engine friendly websites follow only current standard guidelines that are set by search engines. These guidelines are easy to understand and implement from the developer’s point of view. They are not capable of withstanding any future algorithm changes.