JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrap">
  <canvas width="400" height="300"></canvas>
  <textarea id="go">Hello world</textarea>
</div>

CSS

canvas { background:blue }
.wrap, .wrap canvas { width:400px; height:300px }
.wrap { position:relative }
.wrap > * { position:absolute }
#go { top:20px; left:40px; width:150px; height:60px }