A responsive website design is one in which the parts of a website dynamically adapt their appearance depending on the size of the screen they are being viewed on.
Because of the lower screen size on mobile and tablet devices compared to desktop, this adaptable nature avoids design distortion and provides the greatest surfing experience to consumers. On a single site, a responsive design may be created such that it appears somewhat different when viewed on devices of various sizes.
For example, to guarantee optimum readability, the desktop version of a responsive site may display the text in three columns, while the tablet version in two, and the mobile version in one.