.card-columns a {
  color: #000000;
  text-decoration: none;
}
.card-columns a:hover {
  color: #000000;
  text-decoration: none;
}

@media (min-width: 992px) {
  .card-columns {
    column-count: 2;
  }
}
@media (min-width: 1400px) {
  .card-columns {
    column-count: 3;
  }
}