The Last-node Pseudo-class selects the last occurence of an element
in the document tree. If you omit an element selector, it SHOULD
select ALL last-occurrences of each element in the document tree.
Example
Ext/Doc: div:last-node
{ background-color: red }
(selects the last occurrence of a DIV element in the document and makes
its background red.)
In-Line: NA
Browser Peculiarities
Netscape 6.x: I'm not exactly sure how it is determining "last occurrence"
in some situations...some situations which I consider to be NOT "last
occurrence" are being selected - I wonder what order the document tree
is being examined in.