<!DOCTYPE html>

<html>
<head>
    <style>
    body {
        background-image: repeating-linear-gradient(to bottom, white, silver 400px);
    }
    iframe {
        position: relative;
        width: 500px;
        height: 3000px;
        padding: 0;
        background-color: gray;
    }
    </style>
</head>
<body>
<iframe  id="nonscrollable_iframe" src="resources/scroll_nested_iframe_test_inner.html"></iframe>
</body>
</html>