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Test Info:
<!DOCTYPE html>
<!-- Any copyright is dedicated to the Public Domain.
<html>
<head>
<title>CSS Test: Sticky Positioning - stacking context</title>
<link rel="author" title="Corey Ford" href="mailto:cford@mozilla.com">
<link rel="match" href="stacking-context-1-ref.html">
<meta name="assert" content="Sticky positioning should establish a stacking context">
<style>
body {
margin: 0;
}
div {
width: 100px;
height: 100px;
}
#static {
position: absolute;
top: 20px;
left: 20px;
background-color: blue;
z-index: 1;
}
#sticky {
position: sticky;
top: 0;
left: 0;
background-color: black;
}
#inner {
position: relative;
top: 40px;
left: 40px;
background-color: gray;
z-index: 2;
}
</style>
<body>
<div id="static"></div>
<div id="sticky">
<div id="inner"></div>
</div>
</body>
</html>