<!DOCTYPE html> <!-- webkit-test-runner [ useFlexibleViewport=true internal:AsyncOverflowScrollingEnabled=true ] -->
<html>
<head>
    <meta name="viewport" content="width=device-width">
    <style>
        body,
        html {
            -webkit-overflow-scrolling: touch;
            overflow-x: hidden;
            height: 100%;
        }
        body {
            margin: 0;
        }
        .container {
            height: 100px;
            position: relative;
            background-color: silver;
        }
        .scroller {
            width: 100vw;
            overflow-y: hidden;
            background-color: gray;
        }
        .scroller div {
          width: 150vw;
          height: 200px;
        }
        #bottom-scroller {
            position: relative;
            background: rgba(255, 255, 255, 0.8);
        }
        .spacer {
            height: 500px;
        }
        .test {
            position: relative;
            background-color: green;
            height: 800px;
        }
    </style>
    <script>
        function doTest()
        {
            document.body.scrollTop = 600;
        }
        
        window.addEventListener('load', doTest, false);
    </script>
</head>
<body>
    <div class="container">
        <div class="scroller">
            <div></div>
        </div>
    </div>
    <div id="bottom-scroller">
        <div class="spacer"></div>
        <div class="test"></div>
    </div>
</body>
</html>