  }
    .demo-container {
      background-color: #f8f9fa;
      border-radius: 8px;
      padding: 20px;
      margin: 20px 0;
      box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
    .button {
      display: inline-block;
      background-color: #3498db;
      color: white;
      padding: 10px 20px;
      text-decoration: none;
      border-radius: 4px;
      font-weight: bold;
      margin: 10px 0;
    }
    .button:hover {
      background-color: #2980b9;
    }
    .screenshot {
      max-width: 100%;
   