<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="newsletter">
<div class="container">
<div class="row">
<div class="col-sm-12">
<div class="content">
<form>
<h2>SUBSCRIBE TO OUR NEWSLETTER</h2>
<div class="input-group">
<input type="email" class="form-control" placeholder="Enter your email">
<span class="input-group-btn">
<button class="btn" type="submit">Subscribe Now</button>
</span>
</div>
</form>
</div>
</div>
</div>
</div>
</section>
