JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://dinbror.dk/bpopup/assets/style.min.css">
<script src="http://dinbror.dk/bpopup/assets/jquery.bpopup-0.9.4.min.js"></script>
<script src="http://dinbror.dk/bpopup/assets/jquery.easing.1.3.js"></script>
<div id="popup" style="display: none;">
    <span class="button b-close"><span>X</span></span>
    If you can't get it up use<br />
    <span class="logo">bPopup</span>
</div>

<button id="pop">PopUp</button>

JavaScript

$(function(){
    $('#pop').click(function(){
        $('#popup').bPopup();
    });
});