<!DOCTYPE html>
<html>
    <head>
        <style>
            .rel {
                position: relative;
                width: 150px;
            }
            .pos {
                background-color: cyan;
                position: absolute;
                width: 100%;
                top: 0;
                left: 0;
            }
        </style>
    </head>
    <body>
        <p>
        Bug webkit.org/b/111977 : We should compute overflow from cells during simplified layout. The page should have a vertical scrollbar.
        </p>
            <table>
                <tr>
                    <td>
                        <div class="rel">
                            <div class="pos"></div>
                        </div>
                    </td>
                </tr>
            </table>
        <script>
                var e = document.querySelector('.pos');
                document.body.offsetHeight;
                e.style.height = '800px';
        </script>
    </body>
</html>