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<!DOCTYPE html>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script src="apz_test_utils.js"></script>
<script src="apz_test_native_event_utils.js"></script>
body {
margin: 0;
#sticky {
position: sticky;
top: 0;
height: 50vh;
background-color: green;
<div id="sticky"></div>
<!-- Content to make the page scrollable will be added dynamically -->
// Silence SimpleTest warning about missing assertions by having it wait
// indefinitely. We don't need to give it an explicit finish because the
// entire window this test runs in will be closed after the main browser test
// finished.