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diff --git a/testing/web-platform/tests/html/obsolete/requirements-for-implementations/the-marquee-element-0/marquee-overflow.html b/testing/web-platform/tests/html/obsolete/requirements-for-implementations/the-marquee-element-0/marquee-overflow.html
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index 0000000000..44b149952c
--- /dev/null
+++ b/testing/web-platform/tests/html/obsolete/requirements-for-implementations/the-marquee-element-0/marquee-overflow.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>Marquee forces overflow: hidden</title>
+<link rel="help" href="https://html.spec.whatwg.org/#the-marquee-element">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<marquee style="overflow: visible">&nbsp;</marquee>
+<marquee style="overflow: scroll">&nbsp;</marquee>
+<marquee style="overflow: clip">&nbsp;</marquee>
+<marquee style="overflow: auto">&nbsp;</marquee>
+
+<script>
+test(() => {
+ for (let m of document.querySelectorAll("marquee")) {
+ assert_equals(getComputedStyle(m).overflow, "hidden", m.style);
+ }
+}, "Marquee should have overflow: hidden !important in the UA stylesheet");
+</script>