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

main {
  min-height: 70vh;
}

.input-group-lg .form-control {
  border-radius: 0.75rem 0 0 0.75rem;
}

.btn-primary {
  border-radius: 0 0.75rem 0.75rem 0;
}