How to implement responsive card-columns in less
<p>The bootstrap docs gives this to make card columns responsive in SASS:</p>

<pre><code>  .card-columns {
    @include media-breakpoint-only(lg) {
    column-count: 4;
  }
  @include media-breakpoint-only(xl) {
    column-count: 5;
  }
}
</code></pre>

<p>However, I have a LESS version of bootstrap 4 in my website.</p>

<p>How do I write the above is less syntax?</p>