Email Table Grid Border Are Doubled

I just simply want a simple table grid border applied to all cells. Seems there are not simple solution other than using CSS. Here was what I did and what was resulted below, you can see the table border are doubled and have a small margin between each cell. I tried to set margin:0px or any kind but that doesn't seem to go away.

Hello Stephen Li,

Select table their is cell spacing property ="0". It will work.

Hi Stephen,

In addition to the above, try adding a "border-collapse: collapse" to the CSS (see here).