JSFiddle - React, Tailwind, and code Playground
HTML
<div class="out">
<div class="in1">
abc
</div>
</div>CSS
.out {background:#f8f8f8;display:block;height:500px;width:200px;border:1px solid #000;}
.in1 {display:block;width:100px;background:blue;border:1px solid #000;margin:20px auto;text-align:center;color:#fff;padding:20px 0;}