.brand {
  display: block;
  width: 140px;
  height: 72px;
  overflow: hidden;
  text-indent: -9999px;
  background: url('retromusika-gestion-recortado-v57.png') center / contain no-repeat;
}

.auth-card > .brand {
  width: 230px;
  height: 154px;
  margin: 0 auto 12px;
}

@media (max-width: 700px) {
  .brand { width: 150px; height: 46px; }
  .auth-card > .brand { width: 230px; height: 96px; }
}