Button width, or help with margin

Is there a way I can specify the width of the buttons?
I want all my buttons the same width, regardless of the amount of text that is on it.

The wide=”yes” makes them the width of my table, but it adds margin, which I can’t seem to remove, so that doesn’t help. I don’t want the 1em margin as it spreads them out too much down the page.

I think I need some help in how to best lay out this page. ??

The page I need help with: [log in to see the link]