JSFiddle - React, Tailwind, and code Playground

HTML

<div id="outer" onclick="c(this)">

  <div id="inner" onclick="c(this)">

  </div>
  
</div>

CSS

#outer {
  width: 300px;
  height: 300px;
  border: 1px solid black;
}

#inner {
  width: 100px;
  height: 100px;
  background: blue;
}

JavaScript

function c(div) {
  console.log(div)
}