 name="assert" content="Computed values are zero when both 'top' and 'bottom' are set to 'auto'." />
        <style type="text/css">
            div
            {
                height: 1in;
                width: 1in;
            }
            #div1
            {
                background: blue;
                height: 2in;
            }
            div div
            {
                background: orange;
                position: relative;
                top: auto;
                bottom: auto;
      