Theme: Tesseract make table border transparent

Hi, I’ve inserted a table on one page of my website and have tried to make the border of that table transparent by using <table border=”0″> .
However , a thin line still shows up.

I’ve tried testing that html by – for instance – trying <table border=”20″> which shows up as a thick line.
As I decrease that value it still ends up with a thin line on “0” .

Can anyone lend some insight into this please?