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<!doctype html>
<title>CSS Test Reference</title>
<style>
#child {
position: fixed;
top: 0;
left: 0;
width: 200px;
height: 200px;
background-color: blue;
}
</style>
<div style="height: 200px"></div>
<span id="container">
Child should be positioned relative to the viewport, not relative to me.
<div id="child"></div>
</span>