JSFiddle - React, Tailwind, and code Playground

HTML

<div class="body">
    <div class="test">test</div>
</div>

CSS

.body {
    width:200px;
    height:200px;
    
    background-color: lightgrey;
}

.test {
    
    width: 150px;
    height: 150px;
    background-color: #fff;
    -webkit-box-shadow: 10px 10px 6px -6px #000;
	   -moz-box-shadow: 10px 10px 6px -6px #000;
	        box-shadow: 10px 10px 6px -6px #000;
}