JSFiddle - React, Tailwind, and code Playground

HTML

<div id="red">1</div>
<div id="red">2</div>
<div id="red">3</div>
<div id="red">4</div>
<div id="red">5</div>
<div id="red">6</div>

JavaScript

$(function() {
    $('[id="red"]').css('background-color', 'red');
    $('[id="green"]').css('background-color', 'green');
});