JSFiddle - React, Tailwind, and code Playground
HTML
<form class="cart">
<div class="cart" data-bundled_item_id="99">
blergh
</div>
<div class="cart product">
woof
</div>
</form>
CSS
form { padding: 1em; }
div { padding: 1em; }
JavaScript
$('.cart').not('.product, [data-bundled_item_id]' ).css('border','3px solid red');