
      Responsive design means **one website works on all devices**.
      
      ## Why responsive is necessary
      - Most users use mobile
      - Screen sizes vary
      - Fixed layouts break UX
      
      ## Basic media query
      ```css
      @media (max-width: 600px) {
        body {
          background-color: #f2f2f2;
        }
      }
      ```
      
      ## UI Visualization
      - Desktop: normal view
      - Mobile: adjusted view
      
      ## Real-world example
      Every modern website.
      
      ## Final thought
      If your site is not responsive, users leave.
      

Learn what responsive design is, why it matters today, and how CSS adapts websites for mobile, tablet, and desktop screens.

CSS Responsive Basics

Learn CSS for styling modern websites: layouts, flexbox, grid, responsive design, and animations.

CSS Responsive Basics

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