<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">
<h2>Carousel Thumbnails</h2>
</div>
<div class="row blog">
<div class="col-md-12">
<div id="blogCarousel" class="carousel slide" data-ride="carousel">
<ol class="carousel-indicators">
<li data-target="#blogCarousel" data-slide-to="0" class="active"></li>
<li data-target="#blogCarousel" data-slide-to="1"></li>
</ol>
<div class="carousel-inner">
<div class="carousel-item active">
<div class="row">
<div class="col-md-3">
<a href="#">
<iframe width="100%" height="480" src="https://www.youtube.com/embed/Y2s898jySf4" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</a>
</div>
<div class="col-md-3">
<a href="#">
<iframe width="100%" height="480" src="https://www.youtube.com/embed/FeDvBPrM_-4" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</a>
</div>
<div class="col-md-3">
<a href="#">
<iframe width="100%" height="480" src="https://www.youtube.com/embed/cfhGtfuhRJY" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
