/* make em elements italic, but make them normal if they're inside
     something that's italic */
em 
{ 
    font-style: cycle(italic, normal); 
}
 
 
/* cycle between markers for nested lists, so that the top level has
     disk markers, but nested lists use circle, square, box, and then
     (for the 5th list deep) repeat */
ul 
{ 
    list-style-type: disk; 
}
li > ul 
{ 
    list-style-type: cycle(disk, circle, square, box); 
}