JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://fancyapps.com/fancybox/source/jquery.fancybox.js"></script>
<link rel="stylesheet" href="http://fancyapps.com/fancybox/source/jquery.fancybox.css">
<a class="fancybox" rel="gallery1" title="Gallery 1 - 1" href="http://fancyapps.com/fancybox/demo/1_b.jpg"><img src="http://fancyapps.com/fancybox/demo/1_s.jpg" alt=""/></a>

<div class="hidden">
    <a class="fancybox" rel="gallery1" title="Gallery 1 - 2" href="http://fancyapps.com/fancybox/demo/2_b.jpg"><img src="http://fancyapps.com/fancybox/demo/2_s.jpg" alt=""/></a>
    
    <a class="fancybox" rel="gallery1" title="Gallery 1 - 3" href="http://fancyapps.com/fancybox/demo/3_b.jpg"><img src="http://fancyapps.com/fancybox/demo/3_s.jpg" alt=""/></a>
</div>

<a class="fancybox" rel="gallery2" title="Gallery 2 - 1" href="http://fancyapps.com/fancybox/demo/4_b.jpg"><img src="http://fancyapps.com/fancybox/demo/4_s.jpg" alt=""/></a>

<div class="hidden">
    <a class="fancybox" rel="gallery2" title="Gallery 2 - 2" href="http://fancyapps.com/fancybox/demo/5_b.jpg"><img src="http://fancyapps.com/fancybox/demo/5_s.jpg" alt=""/></a>
</div>

CSS

.hidden {
    display: none;
}

JavaScript

$(".fancybox").fancybox({
    padding : 0
});