code:
<!-- Prologue -->
CONTENT START
<h1>01-03-alerts simple</h1>
<h3>With additional content</h3>
<div class="alert alert-success" role="alert">
<h4 class="alert-heading">Well done!</h4>
<p>Aww yeah, you successfully read this important alert message. This example text is going to run a bit longer
so that you can see how spacing within an alert works with this kind of content.</p>
<hr>
<p class="mb-0">Whenever you need to, be sure to use margin utilities to keep things nice and tidy.</p>
</div>
<hr />
CONTENT END
<!-- Epilogue -->