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>