vicki31 on "[Plugin: Contact Form 7] Changing the height of the message box"

I need to change the height of the message box as it is too big. I have tried adding css to wpcf7-form-control wpcf7-textarea, but nothing is changing.

The website is http://rmitpool.com

Any help would be appreciated.

http://wordpress.org/extend/plugins/contact-form-7/