JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://yui.yahooapis.com/3.5.0/build/yui/yui-min.js"></script>
<div id="test" class="yui3-skin-sam"></div>

JavaScript

YUI({
    //Last Gallery Build of this module
    gallery: 'gallery-2012.04.12-13-50'
}).use('gallery-patch-350-widget-modality', 'panel', function(Y) {
 
    // Create a modal panel who's mask node works correctly!
    var panel = new Y.Panel({
        modal : true,
        render: '#test',
        bodyContent: 'Foo',
        width: 300,
        centered: true
    });
 
});