body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
  }
  
  header {
    background-color: #333;
    color: white;
    padding: 1rem;
    text-align: center;
  }
  
  header nav a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
  }
  
  header nav a:hover {
    text-decoration: underline;
  }
  
  footer {
    background-color: #444;
    color: white;
    text-align: center;
    padding: 1rem;
    position: fixed;
    bottom: 0;
    width: 100%;
  }
  
  main {
    padding: 2rem;
  }