Responsive web design is a technique used to create websites that can easily adapt to whatever type of device or technology a user is using. This means the website looks great, works well, and is easy to use, no matter if the user is on a desktop, mobile phone, tablet, or other device.

Responsive web design achieves this by using a combination of flexible grids, layouts, images, and cascading style sheets (CSS) that automatically adjust the contents of the website to how they will appear on the device in question. This ensures that the website always displays the right content in the right way.

This approach to web design can reduce the need to build different versions of a website for various devices and platforms, as responsive design is instead focused on “responsively” adapting to different devices. This can help save time, money, and resources during the development of a website.