JSFiddle - React, Tailwind, and code Playground

HTML

<div id="outer">
  <div id="inner"></div>
</div>

CSS

#outer {
    background-color : green;
    width : 500px; height : 500px;
    position:relative;
}

#inner {
    position : absolute;
    background-color : blue;
    height : 400px;
    width : 400px;
    top : 10px;
    right : 0;
}