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<!DOCTYPE html>
<html lang="en" reftest-async-scroll>
<meta charset="utf-8">
<title>Perspective scrolling</title>
<style>
html {
height: 100%;
overflow: hidden;
}
body {
overflow: auto;
height: 100%;
scrollbar-width: none;
margin: 0;
}
.scene {
position: relative;
width: 200px;
height: 200px;
perspective: 100px;
transform-style: preserve-3d;
}
.face {
position: absolute;
width: 200px;
height: 200px;
top: 0;
left: 0;
}
.front {
background-color: lime;
}
/*
* This one should never be visible, and should be always
* behind the front face.
*/
.back {
width: 400px;
height: 400px;
top: -100px;
left: -100px;
transform: translateZ(-100px);
background-color: red;
}
</style>
<body reftest-displayport-x="0" reftest-displayport-y="0"
reftest-displayport-w="800" reftest-displayport-h="2000"
reftest-async-scroll-x="0" reftest-async-scroll-y="200">
<div style="height: 200px"></div>
<div class="scene">
<div class="face front"></div>
<div class="face back"></div>
</div>
<div style="height: 5000px"></div>
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