A responsive website adapts to any given screen resolution. The website can adapt to tablet screen resolutions as well as mobile. This option requires more upfront planning than a typical website would since website content elements must be considered and given priority as screen sizes shrink. Responsive design websites are recommended by Google as the best for search engine optimization.
Responsive web design's concept and style sheet principals are built on the philosophy that a website should automatically respond to a user’s preference and should work whether someone is on an old laptop or the trendiest latest gadget.