<!doctype html>
<title>position: fixed doesn't overflow the margin area</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1714513">
<link rel="help" href="https://drafts.csswg.org/css-position/#abspos-insets">
<link rel="match" href="position-fixed-overflow-print-ref.html">
<style>
body { margin: 0 }
#outer, #inner {
background-color: purple;
width: 100vw;
height: 100vh;
}
#inner {
position: fixed;
background-color: blue;
top: 0;
left: 50%;
}
</style>
<div id="outer">
<div id="inner"></div>
</div>