JSFiddle - React, Tailwind, and code Playground

HTML

<div id="b">hello</div>
<div id="b">hellogdsgf</div>

CSS

#b
{
    width:50px;
    height:50px;
    background-color:red;
}

JavaScript

$(document).ready(function(){
    $('#b').click(function(){
    $('#b').css("background-color","yellow");
    });
    
});