JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://sandbox.piotr.cz/slvzr/js/selectivizr-development.js"></script>
<link rel="stylesheet" href="http://sandbox.piotr.cz/slvzr/template.css">
<div id="wrapper">
    this works fine
</div>
<img src="http://jsfiddle.net/img/logo.png" />
<ul class="sig-container">
    <li>on hover should change to blue</li>
</ul>

CSS

/*
#wrapper { background: orange; }
#wrapper:hover { background: red; }

.sig-container { background: green;}
.sig-container:hover { background: blue; }
*/

JavaScript

if (document.getElement('ul.sig-container'))
        sig0 = document.getElement("ul.sig-container"); 
        sig0.clone().inject(document.getElement("#wrapper"), "after");
        // sig0.destroy();