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" data-fancybox-type="iframe" href="http://www.alinea.hu/custom/alinea/image/data/documents/Az%20elveszett%20lelegzet_a%20hollo.pdf">Test pdf</a>

JavaScript

$(".fancybox").fancybox({
    openEffect  : 'none',
    closeEffect : 'none',
    iframe : {
        preload: false
    }
});