JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css">
<div class="d-flex justify-content-end">
  <div class="mr-auto p-2">Flex item 1</div>
  <div class="p-2">Flex item 2</div>
</div>