JSFiddle - React, Tailwind, and code Playground

CSS

html {
    background: white;
}
body {
    color: black;
}
pre {
    display: block;
}

JavaScript

for (var si = 0; si < document.styleSheets.length; ++si) {
    var ss = document.styleSheets[si];
    var h = document.createElement("h1");
    h.textContent = ss.href || "<inline>";
    document.body.appendChild(h);
    var rules = [];
    for (var ri = 0; ri < ss.cssRules.length; ++ri) {
        rules.push(ss.cssRules[ri].cssText);
    }
    var pre = document.createElement("pre");
    pre.textContent = rules.join("\n");
    document.body.appendChild(pre);
}