<!DOCTYPE html>
<html>
<head>
<style type="text/css" media="screen">
body {
margin: 0;
height: 1000px;
}
.container {
position: absolute;
z-index: 1;
left: 95px;
top: 145px;
width: 50px;
height: 50px;
outline: 4px solid black;
}
.fixed {
position: fixed;
background-color: green;
height: 100px;
width: 100px;
top: 20px;
left: 20px;
}
.composited {
will-change: transform;
}
.container.two {
left: 200px;
top: 100px;
}
.container.three {
left: 400px;
top: 100px;
}
.box {
width: 100px;
height: 100px;
}
.composited.box {
width: 60px;
height: 60px;
}
.transformed {
transform: translate(0, 0);
}
.indicator {
position: absolute;
background-color: red;
left: 20px;
top: 70px;
}
.indicator.two {
left: 220px;
top: 120px;
}
.indicator.three {
left: 420px;
top: 120px;
}
p {
margin-top: 150px;
}
</style>
<script type="text/javascript" charset="utf-8">
window.addEventListener('load', function() {
window.scrollBy(50, 50);
}, false);
</script>
</head>
<body>
<div class="indicator box"></div>
<div class="indicator box two"></div>
<div class="indicator box three"></div>
<div class="composited box" style="background-color: rgba(0, 0, 255, 0.2)"></div>
<div class="container">
<div class="fixed">
</div>
</div>
<div class="container composited two">
<div class="fixed">
</div>
</div>
<div class="container three">
<div class="transformed box">
<div class="fixed"></div>
</div>
</div>
<p>You should see no red above.</p>
</body>
</html>