body {
  background-color: rgb(158, 158, 158);
  /* background-image: linear-gradient(rgb(158, 158, 158), rgb(146, 146, 145), rgb(0, 0, 73)); */
  height: 100vh;
}

.card {
  max-width: 550px;
  margin-top: 200px;
  background-color: rgb(8, 0, 77);
}

@media (max-width: 991.98px) {
  .card {
    margin-top: 100px;
  }
}