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<!doctype html>
<style>
body {
height: 100%;
overflow: hidden;
display: flex;
flex-direction: column;
margin: 0;
}
#scroll {
overflow-y: auto;
max-height: 100vh;
}
#padding {
height: 100vh;
}
</style>
<script>
window.addEventListener("unload", () => { /* prevent bfcaching */ });
window.addEventListener("pageshow", function(e) {
window.opener.handlePageShow(e.persisted);
});
</script>
<!-- This is important as it delays layout, so that stuff goes through PresShell::Initialize under `mDelayedLayoutStart` instead of ContentAppended -->
<link rel="stylesheet" href="slow-stylesheet.sjs">
<div id="scroll">
<div id="padding"></div>
<a href="t1.html">t1.html</a>
<div id="padding"></div>
</div>