<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 id="carouselExampleControls" class="carousel slide" data-ride="carousel">
<div class="carousel-inner">
<div class="carousel-item active">
<img src="https://placehold.co/600x400/000000/FFFFFF/png" class="d-block w-100" alt="...">
</div>
<div class="carousel-item">
<img src="https://placehold.co/600x400/000000/FFFFFF/png" class="d-block w-100" alt="...">
</div>
<div class="carousel-item">
<img src="https://placehold.co/600x400/000000/FFFFFF/png" class="d-block w-100" alt="...">
</div>
</div>
<button class="carousel-control-prev" type="button" data-target="#carouselExampleControls" data-slide="prev">
<span class="carousel-control-prev-icon" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</button>
<button class="carousel-control-next" type="button" data-target="#carouselExampleControls" data-slide="next">
<span class="carousel-control-next-icon" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</button>
</div>
