ustify-contenido: flex-end
<div class="d-flex justify-content-end">...</div>
flex wrap bootstrap
<div class="d-flex flex-wrap">...</div>
Bootstrap 4 Flex
<div class="d-flex p-3 bg-secondary text-white">
<div class="p-2 bg-info">Flex item 1</div>
<div class="p-2 bg-warning">Flex item 2</div>
<div class="p-2 bg-primary">Flex item 3</div>
</div>