Thesis Theme and Table Margins

I dunno if anyone can help here, but I figured I’d ask if anyone knows why I can’t get rid of the spacing between my input elements in my optin box at the bottom of this page:

Scroll down for problematic opt-in

I just want the table input elements to have smaller spacing between them, but I’ve tried collapsing the borders and setting the margins for my td’s to 0 with 0 padding and the spacing won’t change. It’s always the same size as the input box.

Thanks in advance for any help