<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">
<div class="row">
<h1 class="head">Different types of hover effect</h1>
<h2 class="zoom">zoom in#1</h2>
<div class="col-sm-6">
<div class="img_section">
<figure><img src="http://i3.wp.com/ytimg.googleusercontent.com/vi/g9Is-3fTh7Q/mqdefault.jpg"></figure>
</div>
</div>
<div class="col-sm-6">
<div class="img_section">
<figure><img src="https://i.ytimg.com/vi/v7U78sJxAQk/mqdefault.jpg"></figure>
</div>
</div>
</div>
<div class="row">
<h2 class="zoom_in">zoom in#2</h1>
<div class="col-sm-6">
<div class="img_section2">
<figure><img src="http://i3.wp.com/ytimg.googleusercontent.com/vi/g9Is-3fTh7Q/mqdefault.jpg"></figure>
</div>
</div>
<div class="col-sm-6">
<div class="img_section2">
<figure><img src="https://i.ytimg.com/vi/v7U78sJxAQk/mqdefault.jpg"></figure>
</div>
</div>
</div>
<div class="row">