Responsive Web Design (RWD) is an approach to web design that makes web pages render well on a variety of devices and window or screen sizes from minimum to maximum display sizes.
RWD is about using HTML and CSS to automatically resize, hide, shrink, or enlarge a website, to make it look good on all devices (desktops, tablets, and phones).
%) instead of fixed units like pixels (px).With more than half of all web traffic coming from mobile devices, a responsive site is no longer optional. It improves user experience, boosts SEO, and ensures your content is accessible to everyone.