JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/themes/smoothness/jquery-ui.css">
<div>test</div>

CSS

div {
  color: red;
}

JavaScript

$(document).ready(function() {
  $.each(document.styleSheets, function(i, sheet) {
    console.group(sheet.href);
    console.log(sheet.rules ? sheet.rules : sheet.cssRules);
    console.groupEnd();
  });
});