JSFiddle - React, Tailwind, and code Playground

HTML

<div id="first">Surely, it has to be Hello, World!</div>
<div id="second">And don't call me Shirley</div>
<div id="third">Weird</div>
<div id="fourth">Woohoo! Hello, World is back</div>

CSS

div {
    margin: 5px;
    padding: 5px;
}

JavaScript

var first = document.getElementById("first");
var second = document.getElementById("second");
var third = document.getElementById("third");
var fourth = document.getElementById("fourth");

// Only Chrome/Safari supports (host objects are nuts)
first.style['background-color'] = "#CCC";

// All browsers that support the CSS2Properties interface
second.style.backgroundColor = "green";
// or
third.style["backgroundColor"] = "red";

// All browsers should support this
fourth.style.setProperty("background-color", "orange", null);