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Test Info:
<!DOCTYPE html>
<html class="reftest-wait">
<style>
span.x { color: green; }
div::first-letter { font-size: 100px; }
</style>
<div style="color: red">
<span>X</span>
</div>
<script>
addEventListener("load", function() {
// Make sure we do our class change after we've done our next restyle, so we
// won't get a spurious restyle hiding the problem we're testing.
requestAnimationFrame(() => {
requestAnimationFrame(() => {
var s = document.querySelector("span");
s.className = 'x'
document.documentElement.className = "";
});
});
});
</script>
</html>