<div class="d-grid gap-1 gap-md-0">
<div class="p-2 border bg-info text-white">Grid element</div>
<div class="p-2 border bg-primary text-white">Grid element</div>
<div class="p-2 border bg-success text-white">Grid element</div>
</div>
You don't need to remember all CSS classes. Just use the Bootstrap Editor instead.