<div class="d-flex flex-wrap align-content-end">
<div class="p-2">Flex item</div>
<div class="p-2">Flex item</div>
<div class="p-2">Flex item</div>
...
</div>
<!-- responsive variations -->
<div class="d-flex align-content-sm-end">...</div>
<div class="d-flex align-content-md-end">...</div>
<div class="d-flex align-content-lg-end">...</div>
<div class="d-flex align-content-xl-end">...</div>
You don't need to remember all CSS classes. Just use the Bootstrap Editor instead.