<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<div class="row">
<div class="col-sm-4">
<!--Card-->
<div class="card">
<!--Card image-->
<img class="img-fluid" src="https://mdbootstrap.com/img/Photos/Others/images/16.jpg" alt="Card image cap">
<!--Card content-->
<div class="card-body">
<!--Title-->
<h4 class="card-title">Card title</h4>
<!--Text-->
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
<a href="#" class="btn btn-primary">Button</a>
</div>
</div>
<!--/.Card-->
</div>
<div class="col-sm-4">
<!--Card-->
<div class="card">
<!--Card image-->
<img class="img-fluid" src="https://mdbootstrap.com/img/Photos/Horizontal/Nature/4-col/img%20%287%29.jpg" alt="Card image cap">
<!--Card content-->
<div class="card-body">
<!--Title-->
<h4 class="card-title">Card title</h4>
<!--Text-->
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
<a href="#" class="btn btn-primary">Button</a>
</div>
</div>
<!--/.Card-->
</div>
<div class="col-sm-4">
<!--Card-->
<div class="card">
<!--Card image-->
<img class="img-fluid" src="https://mdbootstrap.com/img/Photos/Horizontal/People/6-col/img%20%283%29.jpg" alt="Card image cap">
<!--Card content-->
<div class="card-body">
<!--Title-->
<h4 class="card-title">Card title</h4>
<!--Text-->
<p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
<a href="#" class="btn btn-primary">Button</a>
</div>
</div>
<!--/.Card-->
</div>
</div>
</div>