[Plugin: Custom Contact Forms] Submit Button not following template css

My submit button is aligned to the left and it’s margin is different than the page margin… is there a way to make sure the form follows the css of the page (at least so that the submit button isn’t further to the left than the body text?

my contact form on the site i am building: http://www.duttoncaseylaw.dreamhosters.com/contact-us/

http://ww.wp.xz.cn/extend/plugins/custom-contact-forms/