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<!DOCTYPE html>
<link rel="author" title="Chris Harrelson" href="mailto:chrishtr@chromium.org">
<meta name="assert" content="Test that the browser doesn't crash when a first-letter pseudo-element toggles visiblity as a child of a before pseudo-element.">
<style>
.btn-text::before {
content: "a";
visibility: hidden;
}
.btn-text.visible::before {
visibility: visible;
}
#problem::first-letter {
text-transform: none;
}
</style>
<div id="problem">
<span class="btn-text"></span>
</div>
<script>
requestAnimationFrame(() => requestAnimationFrame(() => {
document.querySelector('.btn-text').classList.toggle('visible')
}));
</script>
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