<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<div class="container">
<h5>Bootstrap 4 Equal Height Cards using Grid</h5>
<div class="row">
<div class="col-sm-4 py-2">
<div class="card card-body h-100">
Card. I'm just a simple card-block.
</div>
</div>
<div class="col-sm-4 py-2">
<div class="card h-100 text-white bg-danger">
<div class="card-body">
<h3 class="card-title">Danger</h3>
<p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
<a href="#" class="btn btn-outline-light">Outline</a>
</div>
</div>
</div>
<div class="col-sm-4 py-2">
<div class="card h-100 card-body">
Card. I'm just a simple card-block, but I have a little more text!
</div>
</div>
<div class="col-sm-4 py-2">
<div class="card h-100 border-primary">
<div class="card-body">
<h3 class="card-title">Primary</h3>
<p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
<a href="#" class="btn btn-outline-secondary">Outline</a>
</div>
</div>
</div>
<div class="col-sm-4 py-2">