JSFiddle - React, Tailwind, and code Playground

HTML

<div>parent div
  <p>para</p>
  <span>span</span>
  <h1>heading</h1>
  <p>para</p>
  <p>para</p>

CSS

body * { 
    display: block;
    border: 3px solid lightgrey;
    color: grey;
    padding: 6px;
    margin: 16px;
}

JavaScript

$(document).ready(function(){
    $("h1").nextAll().css({"color": "#4FB053", "border": "1px solid #4FB053"});
});