<!-- webkit-test-runner [ LayoutFormattingContextEnabled=true LayoutFormattingContextIntegrationEnabled=false ] -->
<!DOCTYPE html>
<html>
<head>
    <style>
        .container {
            background-color: green;
            border: 10px solid blue;
            position: absolute;
        }
    </style>    
</head>
<body>
<div class=container style="width: 116px; height: 116px; left: 20px; top: 20px;"></div>
<div class=container style="width: 78px; height: 78px; left: 58px; top: 58px; z-index: 1"></div>
<div class=container style="width: 40px; height: 40px; left: 96px; top: 96px; z-index: 2"></div>
</body>
</html>