Sorry – you’re right.
I installed your Responsive Tables plugin and it worked great.
The issue I had was on desktop viewing full browser width of the site. The thin table border stretched the width of the column correctly, however the table didn’t fully. It had a white space to the right of the table stretching to the right table border.
I fixed this by changing the shortcode frm [table id=123 responsive=”all” /] to [table id=123 responsive=”phone” /]
Cheers