JSFiddle - React, Tailwind, and code Playground

by Shree Khanal

HTML

<form id="user-profile-form" >

 <fieldset> .... </fieldset>

 <fieldset> .... </fieldset>

 <fieldset> .... </fieldset>

 <fieldset> .... </fieldset> 

</form>

CSS

.test-class
{
    
    background-color: red
}

JavaScript

$('#user-profile-form fieldset:nth-child(2)').addClass('test-class');