<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>
<section class="py-60">
<div class="container">
<div class="row Button-collection">
<div class="col-md-12 mb-4 mt-4 ">
<h4 class="mb-4 text-center"> Square Button</h4>
<div class="text-center">
<button type="button" class="btn btn-primary btn-shadow">Primary</button>
<button type="button" class="btn btn-success btn-shadow">Success</button>
<button type="button" class="btn btn-danger btn-shadow">Danger</button>
<button type="button" class="btn btn-warning btn-shadow">Warning</button>
<button type="button" class="btn btn-info btn-shadow">Info</button>
<button type="button" class="btn btn-light btn-shadow">Light</button>
</div>
</div>
<div class="col-md-12 mb-4 mt-4">
<h4 class="mb-3 text-center"> Without shadow Button</h4>
<div class="text-center">
<button type="button" class="btn btn-primary ">Primary</button>
<button type="button" class="btn btn-success ">Success</button>
<button type="button" class="btn btn-danger ">Danger</button>
<button type="button" class="btn btn-warning ">Warning</button>
<button type="button" class="btn btn-info ">Info</button>
<button type="button" class="btn btn-light">Light</button>
</div>
</div>
<div class="col-md-12 mb-4 mt-4">
<h4 class="mb-3 text-center"> Round Button</h4>
<div class=" text-center">
<button type="button" class="btn btn-primary btn-shadow pill-button">Primary</button>
<button type="button" class="btn btn-success btn-shadow pill-button">Success</button>
<button type="button" class="btn btn-danger btn-shadow pill-button">Danger</button>
<button type="button" class="btn btn-warning btn-shadow pill-button">Warning</button>