JSFiddle - React, Tailwind, and code Playground
by blowsie
HTML
<div class="target">
<div class="inside"></div></div>
<svg height="0">
<clipPath id="c1" clipPathUnits="objectBoundingBox">
<rect x="1" width="1.0" height="1.0" transform="rotate(45)"/>
</clipPath>
</svg>
CSS
.target { clip-path: url(#c1);
background:red;
height:300px;
width:300px;
margin:200px;
padding: 20px}
.inside {background:blue; height: 300px;}