<ul>
<li>W3TR</li>
<li>W3TR</li>
<li>W3TR</li>
</ul>
<ul>
<li>W3TR</li>
<li>W3TR</li>
<li>W3TR</li>
</ul>
$("li:nth-last-child(2)").css("background-color", "red");
This Pen doesn't use any external CSS resources.