Table cell border lines still visible

[Some]

Hello,
I am attempting to remove the appearance of the table cell related borders from my table however despite have tried changing all of the border related styles that I can identify they are still there.  I was hoping I could get some suggestions on what I should try / could be doing wrong this seems like it should be pretty straight forward.  I am making use of a report stylesheet / style rules if that makes any difference.  Please see the attached image with the faint appearance of cell borders which I would like to get to go away.  They are most noticeable in the blue table headers but are also visible in the alternating gray lines.

Thanks for any help in advance,
Nick

[Hadib Ahmabi]

Set a solid border to the cells with the same color (blue for the header, gray for the rows). That should fix it.