JSFiddle - React, Tailwind, and code Playground

HTML

<div> Expected: <span id="exp"></span> </div>
<div> Actual: <span id="act"></span> </div>

JavaScript

var expected = 'body { width: initial; }';

var styleEl = document.createElement('style');
styleEl.textContent = expected;
document.head.appendChild(styleEl);

var actual = styleEl.sheet.cssRules[0].cssText;

document.getElementById('exp').textContent = expected;
document.getElementById('act').textContent = actual;