JSFiddle - React, Tailwind, and code Playground

by vzytoi

HTML

<div class="box">
  <div class="append">
  </div>
</div>

CSS

.box {
  background: red;
  width: 250px;
  height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.append {
  background: #fff;
  height: 50px;
  width: 50px;
}

JavaScript

cont box = document.querySelector('.append');
box.append('coucou');