JSFiddle - React, Tailwind, and code Playground

by Claudius

HTML

<form method='post' >
    <fieldset>
        <input type='email' name='foo' required />
        <input type='submit' />
    </fieldset>
</form>

CSS

.error {
    border: 2px solid red;
}

JavaScript

$('form').submit(function() {
    $('fieldset').addStyle('error');
    return false;
})