JSFiddle - React, Tailwind, and code Playground

HTML

<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>

CSS

#popup, .bMulti {
    background-color: #FFF;
    border-radius: 10px 10px 10px 10px;
    box-shadow: 0 0 25px 5px #999;
    color: #111;
    display: none;
    min-width: 450px;
    min-height: 250px;
    padding: 25px;
}

#popup .logo {
    color: #2B91AF;
    font: bold 325% 'Petrona',sans;
}

.button.b-close, .button.bClose {
    border-radius: 7px 7px 7px 7px;
    box-shadow: none;
    font: bold 131% sans-serif;
    padding: 0 6px 2px;
    position: absolute;
    right: -7px;
    top: -7px;
}

.button {
    background-color: #2B91AF;
    border-radius: 10px;
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.3);
    color: #FFF;
    cursor: pointer;
    display: inline-block;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
}

JavaScript

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