Responsive design is an approach to building web interfaces that automatically adjust layouts, images, and components to fit a wide range of screen sizes and device types. It relies on CSS media queries, flexible grids, fluid typography, and adaptive components. Responsive design ensures consistency and usability across phones, tablets, and desktops.
Why it matters
Users access websites from an enormous variety of devices. Without responsive design, layouts break, text becomes unreadable, and interactions become difficult. Responsive design improves accessibility, SEO, and user satisfaction.
Examples
Using CSS media queries to adjust layout at different breakpoints or creating flexible grids that scale with viewport width. Lessons like Responsive Design reinforce these concepts.