buzztone on "[Plugin: Contact Form 7] Contact form 7 in sidebar"

I had a look at your link. It's definitely the same CF7 form on the page and in the widget.

To fix the styling problems in the widget form - see Styling Contact Form for a general explanation of styling CF7 forms using CSS.

There is a link at the bottom of the page to a comprehensive and detailed article on Styling Contact Form 7 Forms.