JSFiddle - React, Tailwind, and code Playground

HTML

<img src="sample.png" alt="sample" />

<ul>
  <li><a href="http://hibari.2ch.net/test/read.cgi/hp/1296794731/640n-">Webサイト制作初心者用質問スレ part223</a></li>
</ul>

CSS

img { position: absolute; top: 50%; left: 50%; margin-top: -50px; margin-left: -50px; width: 100px; height: 100px; border: solid 1px green; }