I don't know why this bothers me so much, but when I create websites, I always try to do all my styling with CSS. However one thing I always have to remember to do when I'm working with tables is add cellspacing="0" and cellpadding="0"
Why is there not a CSS property to override these antiquated HTML 4 attributes?
table { border-collapse: collapse; }
As for cellpadding, you can do
table tr td, table tr th { padding: 0; }