@media (min-width: 600px) {
  .rootcard {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }

  .pcard {
    max-width: 40%;
    margin: 20px;
  }
}

.authcard {
  margin: 10px auto !important;
  max-width: 500px;
}