Why is my category box so big? (Wordpress)

I am designing a Wordpress theme and I can't figure out why my categories are so big in my sidebars! If you look the drop down categories are bigger then the sidebars themselves.

Here is my site http://michiganloanmodification.net

If someone could help that would be great!

 

You have to change the width on the style named "postform" on your css file.

 

Thanks a lot man!

=]