Responsive Web Design
Responsive Web Design is a design approach which aims to make web pages render well on a variety of devices and screen sizes. Using this design approach enables the user to accomplish their goal on any device they want, whether it is a smartphone, tablet or laptop.
When making an interaction design and visual design, the designer has to take into account that a website must be viewable on different screensizes. The resulting design should make it clear which responsive behavior must be supported in the website by the front-end developer.