body {
      background-color: black; 
      color: white; 
      font-family: sans-serif;
      margin: 20px; 
    }
    a {
      color: #00ff00;
      text-decoration: none;
      font-weight: bold;
      margin-right: 15px;
    }
    h1 {
      margin-top: 30px;
      color: white;
    }
    h2 {
      margin-top: 30px;
      color: white;
    }