" href="http://www.w3.org/TR/CSS21/visuren.html#block-formatting" />
        <meta name="assert" content="A new block formatting context is established when overflow is set to 'scroll'." />
        <style type="text/css">
            #div1
            {
                height: 200px;
                width: 200px;
            }
            div div
            {
                height: 50px;
                width: 50px;
            }
            #div2
            {
                background: blue;
          