JSFiddle - React, Tailwind, and code Playground
HTML
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<div class="form-group">
<label>CVV</label>
<input type="text" size="4" class="form-control" />
</div>
<div class="form-inline">
<label>Expiration (MM/YYYY)</label><br>
<input type="text" size="2" class="form-control" /> / <input type="text" size="4" class="form-control" />
</div>