Responsive web design is used to make a website look great on different screen sizes. The design should respond and resize based on the device used and the device’s orientation. Web design is responsive if it’s programmed with different layouts in mind. The design adjusts depending on if it’s viewed on a phone, tablet or large desktop.
Responsive web design makes sure that the site doesn’t look distorted or that elements don’t unintentionally move around. On a desktop version, you might show a carousel in the header. If you look at the same site on a phone, you might choose to show a larger static image. Most templates nowadays are programmed to be responsive so you very rarely have to make adjustments after you downloaded your template.