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<!DOCTYPE html>
<title>Reference for Scroll timeline with WorkletAnimation using the root scroller</title>
<style>
/* Hide scrollbars to avoid unnecessary visual issues related to them */
html::-webkit-scrollbar {
display: none;
}
html {
scrollbar-width: none;
min-height: 100%;
min-width: 100%;
padding-bottom: 100px;
padding-right: 100px;
}
#box {
width: 100px;
height: 100px;
background-color: green;
transform: translate(0, 100px);
opacity: 0.5;
will-change: transform; /* force compositing */
}
#covered {
width: 100px;
height: 100px;
background-color: red;
}
</style>
<div id="box"></div>
<div id="covered"></div>
<script>
window.addEventListener('load', function() {
// Move the scroller to halfway.
const scroller = document.scrollingElement;
const maxScroll = scroller.scrollHeight - scroller.clientHeight;
scroller.scrollTop = 0.5 * maxScroll;
});
</script>
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