JSFiddle - React, Tailwind, and code Playground

HTML

<div class='wrap'> 
           <iframe src="h_f_l.html" ></iframe>
		 </div>

CSS

body,html{height:100%}
.wrap{position:relative;height:100%}
.wrap iframe{
	width:200px;
	height:200px;
	position:absolute;
	top:50%;
	left:50%;
	margin:-100px 0 0 -100px;
}