.auth-box {
  max-width: 420px;
  margin: 24px auto;
  padding: 32px;
  background: #fff;
  border: 1px solid #e6e6e6;
  border-radius: 10px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.auth-box h2 {
  margin-top: 0;
  text-align: center;
}

.auth-box label {
  display: block;
  margin-top: 16px;
  font-weight: 600;
}

.auth-box input {
  width: 100%;
  padding: 10px;
  margin-top: 6px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

.auth-box button {
  width: 100%;
  margin-top: 24px;
}

.error {
  color: #b00020;
  text-align: center;
}

@media (min-width: 900px){
  .auth-box{ margin: 40px auto; }
}

@media (max-width: 520px){
  .auth-box{ padding: 18px; border-radius: 12px; }
}