es" />
        <meta name="flags" content="" />
        <meta name="assert" content="The 'margin-top' property sets a nominal length value in percentages." />
        <style type="text/css">* { margin: 0; padding: 0 }
            div
            {
                height: 0;
            }
            #wrapper
            {
                width: 2in;
            }
            #div1
            {
                border-top: 1in solid red;
                margin-bottom: -2in;
            }
   