<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="//code.jquery.com/jquery-1.11.1.min.js"></script>
<body class="hm-gradient">
<main>
<div class="container text-center mt-4">
<div class="text-center darken-grey-text mb-4">
<h1 class="font-bold mt-4 mb-3 h5">Built with Material Design for Bootstrap 4</h1>
<a class="btn btn-danger btn-md" href="https://mdbootstrap.com/material-design-for-bootstrap/" target="_blank">Free download<i class="fa fa-download pl-2"></i></a>
</div>
<div class="card mb-4">
<div class="card-body">
<button type="button" class="btn btn-elegant">Elegant</button>
<button type="button" class="btn btn-unique">Unique</button>
<button type="button" class="btn btn-pink">Pink</button>
<button type="button" class="btn btn-purple">Purple</button>
<button type="button" class="btn btn-deep-purple">Deep-purple</button>
<button type="button" class="btn btn-indigo">Indigo</button>
<button type="button" class="btn btn-light-blue">Light blue</button>
<button type="button" class="btn btn-cyan">Cyan</button>
<br>
