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

header h1 {
  font-weight: 700;
}

.card-title {
  color: #0d6efd;
  font-weight: 600;
}

button {
  font-size: 1rem;
  font-weight: 500;
}