JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
<div class="container">
  <div class="row" id="appSummary">
    <h1>Why This App Is Awesome</h1>
    <p class="lead">Summary, once again, of your app's awesomeness</p>
  </div>
</div>

CSS

.container, h1, p {
  margin: auto;
}