  <meta name="assert" content="An absolutely positioned replaced element with a percentage height that cannot be resolved has no intrinsic height.">
        <style type="text/css">
            #div1
            {
                position: relative;
            }
            div div
            {
                border: solid green;
                position: absolute;
                top: 1in;
                width: 300px;
            }
            iframe
            {
                border: solid red;
    