body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background: #fdfdfd;
    color: #333;
  }
  
  header {
    background: #007acc;
    color: white;
    padding: 1rem;
    text-align: center;
  }
  
  nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 0.5rem 0 0;
  }
  
  nav a {
    color: white;
    text-decoration: none;
  }
  
  main a {
    color: blue;
    text-decoration: underline;
  }
  
  main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
  }
  
  h2 {
    color: #007acc;
  }
  
  ul {
    padding-left: 1.5rem;
  }
  
  code {
    background: #eee;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
  }
  
  blockquote {
    background: #f0f8ff;
    padding: 1rem;
    border-left: 5px solid #007acc;
  }
  
  footer {
    text-align: center;
    padding: 1rem;
    background: #eee;
    font-size: 0.9rem;
  }