body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  }
  .navbar .navbar-brand {
    margin: 0 auto;
  }
  
  .card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
  }
  
  .btn {
    width: 70%;
  }
  
  footer {
    position: relative;
    bottom: 0;
    width: 100%;
  }