I realize it's a minuscule issue, but can someone please tell me if there is a way to remove the line show below in the pic.
Do you see how the line is double stacked.
Is it not part of the .thead property?
That's a table border. I believe it's .tborder css.
Oh the little gray line. Try a theme buddy.
Hmm..that also might be table background. I think if get rid of it you also get rid of all the background lines. You may find it more difficult than you think to remove it.
Try just a theme buddy it will be better, and more users will come in the end.