JSFiddle - React, Tailwind, and code Playground

by batcave

HTML

<div class="container">
  <div class="container__sub">
    <div class="element">hej</div>
  </div>
</div>

CSS

.container {
  padding: 2rem;
  background-color: deepskyblue;
}

.container--found {
  background-color: deeppink;
}

JavaScript

const element = document.querySelector('.element')
const parent = element.closest('.container')
parent.classList.add('container--found')