@media (min-width: 1800px) {
    .d-xxxl-block {
      display: block !important;
    }
  }

  @media (max-width: 1799.98px) {
    .d-xxxl-block {
      display: none !important;
    }
  }

@media (max-width: 1800px) {
  .my-element {
    display: block;
  }
}

@media (min-width: 1801px) {
  .my-element {
    display: none;
  }
}