JSFiddle - React, Tailwind, and code Playground

HTML

<h2>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</h2>

CSS

span {
    color:red;
}

JavaScript

$(function() {
    $('h2').each(function(){
        $(this).html( $(this).text().replace(/(^\w{3})/,'<span>$1</span>'));
    });
});