JSFiddle - React, Tailwind, and code Playground

HTML

<div id="outer" style="width: 400px; height: 400px; border: 1px solid red; position: relative">
    <div id="inner" style="width: 200px; height: 200px; border: 2px solid yellow;  right:0;bottom:0;position:absolute;">
    </div>
</div>