<!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
    <style>
        .container {
            width: 300px;
            height: 300px;
            border: 1px solid black;
            background-color: rgba(200, 200, 200, 0.5);
        }
        
        .content {
            height: 90%;
        }
        
        .box {
            margin-top: -120px;
            margin-left: 50px;
            width: 200px;
            height: 200px;
            background-color: blue;
            
        }
        
        .box:hover {
            background-color: green;
        }
    </style>
</head>
<body>
    <p>Blue box should be on top.</p>
    <div class="container"></div>
    <div class="box"></div>
</body>
</html>