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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<head>
<title>CSS Test: Z-index and similar stacking levels</title>
<meta name="assert" content="Boxes with the same stack level in a stacking context are stacked back-to-front according to document tree order." />
<style type="text/css">
#div1
{
position: relative;
}
div div
{
height: 1in;
position: absolute;
width: 1in;
}
#div2
{
background: blue;
left: 0;
top: 0;
z-index: 1;
}
#div3
{
background: orange;
left: 30px;
top: 30px;
z-index: 1;
}
#div4
{
background: yellow;
left: 60px;
top: 60px;
z-index: 1;
}
</style>
</head>
<body>
<p>Test passes if the boxes are partially stacked on top of each other, and they are stacked in the following order from bottom to top: blue, orange, yellow.</p>
<div id="div1">
<div id="div2"></div>
<div id="div3"></div>
<div id="div4"></div>
</div>
</body>
</html>