Responsive web design is like a magic wand that allows your website to change according to the user’s device. Imagine when your website is displayed on a large desktop computer, it will show a wide layout design; but when the same website is displayed on a mobile phone, it will automatically adjust the layout and present a concise style, allowing users to easily browse on a small screen. Responsive web design no longer requires building separate websites for each device, just design a self-adjusting website that can give all users the best experience.