Responsive web design (RWD) is an approach that ensures a website’s layout, images, and functionality dynamically adjust based on the device being used, providing an optimal viewing experience across many screen sizes now available including smartphones, tablets, laptops, and desktop monitors. This design method utilizes flexible grids, media queries, and fluid images to ensure that the website maintains usability and aesthetic appeal, regardless of screen size or orientation. RWD is essential due to the wide range of devices and resolutions in use today, enabling businesses to provide a seamless experience for all users. By contrast, unresponsive web designs remain static and may force users to zoom in or out, leading to poor user experience and higher bounce rates. Incorporating responsive web design improves accessibility, user engagement, and can also positively impact SEO, as search engines prioritize mobile-friendly sites.