body {
  margin: 0;
  background: #fff !important;
}

.card {
  max-width: 900px;
  background: #fff;
}

#alert .alert {
  border-radius: 0.5rem;
}

input::placeholder, textarea::placeholder {
  color: #aaa;
}

@media (max-width: 576px) {
  .btn {
    width: 100%;
  }
}