JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <div id="wrapper">
    </div>
</div>

CSS

#container {
    background:#000;
    overflow:hidden;
}
    #wrapper {
        width:200px;
        height:200px;
        background:#bbb;
        margin:10px 0 0;
    }