JSFiddle - React, Tailwind, and code Playground
HTML
<div class="one" onclick="alert(1)"><div class="two" onclick="alert(2)"></div></div>CSS
.one{z-index:1;width:100px;height:100px;background-color:yellow;}
.two{z-index:0;width:30px;height:30px;background-color:red;}