Google search box doesn't come out correctly in Spreadfirefox

I'm not very good with css so I am not sure what is causing this but when I try to create a block or page with a google search box in it the spreadfirefox theme increases the height of the search box and makes it very unappealing. An example would be http://www.chibabeat.com/page_0. Is there anything I can do to make this search box come out normal size. Also, it would be nice if I could also remove the border too.
Thanks,
Josh