f 'empty-cells' is set to 'hide', empty cells are transparent all the way down to the table background." />
        <style type="text/css">* { margin: 0; padding: 0 }
            table
            {
                background: orange;
                border-collapse: separate;
                border-spacing: 0;
            }
            colgroup, col, tbody, tr
            {
                background: blue;
            }
            td
            {
                height: 2em;
             