JSFiddle - React, Tailwind, and code Playground
HTML
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
<form accept-charset="UTF-8" action="/sessions" method="post">
<div class="form-group">
<input class="form-control" id="user_email" name="user[email]" placeholder="EMAIL" required="required" type="email" />
</div>
</form>