JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
    <div>2</div>
</div>

CSS

.parent{
    background:red;
    width:100px;
    height:100px;
    overflow:hidden;
}
.parent div{
    width:50px;
    height:50px;
    background:green;
    margin:20px;
}