Responsive Web Design (RWD) is a way of building websites that makes sure your site looks good and works well on all devices, from big desktop screens to small mobile phones.
It uses flexible layouts, images that resize, and special rules called media queries to change the website’s design based on the screen size.
With responsive design, you only create one website, and it automatically adjusts things like menus, text, and images to fit the device. This makes the website easier to use, helps with search engines (SEO), and gives a better experience for everyone.