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Test Info:

<style>
*:has([e]),
:nth-last-child(n of:read-only[d=""][b=""] d){}
</style>
<script>
const func_1 = (e) => {
e.originalTarget.scrollTop = 2147483647
}
document.addEventListener("DOMContentLoaded", () => {
document.documentElement.setAttribute("contenteditable", true)
let a = document.createElementNS("http://www.w3.org/1999/xhtml", "a")
document.documentElement.appendChild(a)
document.documentElement.hidden = true
a.addEventListener("DOMAttrModified", func_1, true)
a.draggable = true
document.documentElement.removeAttribute("contenteditable")
a.setHTML("", { })
})
</script>
<marquee>