JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css">
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<div id="dialogDiv">dialog div</div>
<input id="btn" type="button" value="click me!!!">

JavaScript

$("#dialogDiv").dialog({
    autoOpen: false,
    modal: true
});
$("#btn").click(function () {
    $("#dialogDiv").dialog('open');
    $('.ui-widget-overlay').css('background', 'black');
});