JSFiddle - React, Tailwind, and code Playground

HTML

<div id="text">
    <h1>Lorem ipsum dolor sit amet</h1>
    <p>consectetur adipisicing elit</p>
    <p>sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
    <p>Ut enim ad minim veniam</p>
</div>

JavaScript

$("#text").html(function(i, oldHtml) {
        return oldHtml.replace(/([^ ]+)(?![^>]>)/gi, "<span style='color: red;'>$1</span>");
    });