* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family:
      system-ui,
      -apple-system,
      sans-serif;
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
  }
  
  main {
    text-align: center;
  }
  
  h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
  }
  
  p {
    font-size: 1.25rem;
    opacity: 0.9;
  }