JSFiddle - React, Tailwind, and code Playground

HTML

<div id="outer" style="overflow: hidden; position: absolute;">
    <div id="otherStuff">
      some other stuff goes in here
    </div>
    <div id="wrapper">
        <div id="popup">
        </div>
    </div>
</div>

CSS

#wrapper {
    top: 50px;
    left: 50px;
    width: 100px;
    height: 100px;
    background: red;
    position: absolute;
}