Webpage - Desktop and Mobile View

Responsive Design patterns are used to make a web page responsive across various devices of varying screen sizes.Most design patterns will use breakpoints to adapt for different screen sizes. A Breakpoint is the point at which a different CSS will be applied, usually through a media query, to optimize the design for the user's viewport. A good example of a breakpoint would be one where your layout has to change from two columns to four columns from one device to another.