The DITA Open Toolkit automatically inflicts some inline table attributes when one publishes to HTML, including frame="border" and rules="all". I need to override this "rules" attribute using CSS styles for cells, and while I can get the desired result in IE and Chrome, Firefox puts solid black gridlines in the table and refuses to budge on the matter. Obviously I can't edit the HTML, company policy is to not edit the XSLT, so how can I remove these gridlines using CSS alone? I've tried various cunning combinations of border-xxxxxx styles and given them !important declarations to no effect. Thanks, Andrew