CSS2 introduces some new aspects like the handling of tables. So instead we could use the file http://www.dur.ac.uk/barry.cornelius/papers/xml.processing.using.php/code/css2.xml.

<?xml version="1.0" standalone="no"?>
<?xml-stylesheet type="text/css" href="css2.css"?>
<!DOCTYPE consumables SYSTEM "consumables.dtd">
<consumables>
...
</consumables>

where the file css2.css contains:

consumables { display: table }
product     { display: table-row }
category    { display: table-cell; font-size: x-large; 
              color: black }
item        { display: table-cell; font-size: large; 
              color: red; text-indent: 0.1in }
price       { display: table-cell; background-color: yellow; 
              color: blue; text-align: right; text-indent: 0.1in }

Although these instructions are obeyed correctly by NS7, they are not understood by IE6.