Lightbox
Lightbox is a small javascript library used to overlay images on top of the current page. It's a snap to setup and works on all modern browsers.
Lightbox documentationStylesheet
<link href="assets/lib/lightbox2/css/lightbox.min.css" rel="stylesheet">
Javascript
<script src="assets/lib/lightbox2/js/lightbox.min.js"></script>
Gallery
<div class="row">
<div class="col-sm-4 col-lg-3 mb-4">
<a href="../assets/img/gallery/1.jpg" data-lightbox="group" data-title="caption"><img class="rounded img-fluid" src="../assets/img/gallery/1.jpg" alt=""></a>
</div>
<div class="col-sm-4 col-lg-3 mb-4">
<a href="../assets/img/gallery/2.jpg" data-lightbox="group" data-title="caption"><img class="rounded img-fluid" src="../assets/img/gallery/2.jpg" alt=""></a>
</div>
<div class="col-sm-4 col-lg-3 mb-4">
<a href="../assets/img/gallery/3.jpg" data-lightbox="group" data-title="caption"><img class="rounded img-fluid" src="../assets/img/gallery/3.jpg" alt=""></a>
</div>
</div>