JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="test">
    <li>Normal</li>
    <li><b>bold</b></li>
    <li><i>italic</i></li>
    <li><strong>stron</strong></li>
    <li><a>anchor</a></li>
    <li><span>span</span></li>
</ul>

<p>Normal <b>bold</b> <i>italic</i> <strong>strong</strong> <a>anchor</a> <span>span</span></p>

<div>Normal <b>bold</b> <i>italic</i> <strong>strong</strong> <a>anchor</a> <span>span</span></div>

<span>Normal <b>bold</b> <i>italic</i> <strong>strong</strong> <a>anchor</a> <span>span</span></span>

JavaScript

$("span").css({opacity: .2});