JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="parent">
        <div class="child"></div>
    </div>
</div>

CSS

.container {
    width: 300px;
    height: 400px;
    background: #eee;
    border: 1px dotted #777;
}
.parent {
    width: 275px;
    height: 300px;
    margin: 20px auto;
    background: #bbb;
}
.child {
    width: 250px;
    height: 200px;
    margin: 20px auto;
   background: #777;
}