Are you using the Table to HTML or the Table to HTML String node?
In the Table to HTML String node I think you may be able to achieve what you want by editing the CSS on the Styles tab?
It doesn’t look like there’s an XML equivalent to the JSON Transformer which would be ideal for this scenario. You could go string → XML → JSON transform and back but that’s going to be a bit too complex to be worth it.
Cheers
Sam