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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>CSS Test: Z-index and similar stacking levels</title>
        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
        <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#layers" />
        <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>