<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="d-flex flex-nowrap">
<div class="flex-last p-2">First flex item</div>
<div class="p-2">Second flex item</div>
<div class="flex-first p-2">Third flex item</div>
</div>
<div class="d-flex flex-row flex-wrap">
<div class="p-2">Flex item 1</div>
<div class="p-2">Flex item 2</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
<div class="p-2">Flex item 3</div>
</div>
<div class="d-flex flex-row-reverse">
<div class="p-2">Flex item 1</div>