body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  }

  .navbar {
    background-color: #343a40;
    color: #ffffff;
  }

  .jumbotron {
    background-color: #343a40;
    color: #ffffff;
    padding: 100px 0;
    text-align: center;
  }

  .features {
    background-color: #ffffff;
    padding: 80px 0;
  }

  .feature-item {
    text-align: center;
  }

  .footer {
    background-color: #343a40;
    color: #ffffff;
    padding: 20px 0;
    text-align: center;
  }