@media (min-width: 640px) {
  #login-empresa-container {
    background-position: center top;
  }
  #login-system {
    max-width: 420px;
  }
}

@media (max-width: 639px) {
  #login-system {
    max-width: 340px;
    padding: 1.2rem;
  }
}