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<!doctype html>
<script src="util.js"></script>
<body>
<script>
window.onload = function() {
flush_layout();
perf_start();
let s = document.createElement("style");
s.appendChild(document.createTextNode(`* {`));
for (let i = 0; i < 100000; ++i) {
s.appendChild(document.createTextNode(`--custom-prop-${i}: ${Math.random()};`));
}
s.appendChild(document.createTextNode(`}`));
document.head.appendChild(s);
flush_style(document.body);
perf_finish();
}
</script>
</body>