What is the purpose of using responsive design?

The purpose of using responsive design is to ensure that websites look good and function well on a variety of devices and screen sizes. This approach allows web developers to create a single website that adapts to the user's device, whether it’s a desktop, tablet, or smartphone. By using fluid grids, flexible images, and CSS media queries, responsive design ensures consistent user experiences and improves accessibility.

This adaptability is increasingly important as users access the internet through a diverse range of devices. The goal is to provide a seamless browsing experience, which can lead to higher user engagement and retention. Responsive design not only enhances usability but also contributes positively to search engine optimization (SEO), as search engines favor mobile-friendly sites.

Options like increasing server speed, optimizing database queries, or enhancing code security do not relate directly to the user experience on different devices and screen sizes, which is the primary concern addressed by responsive design.