form textarea to remain fixed (no resize)

[810311]

Good day,

I am trying to build a contact page and insert it into Mr. Paul O'B layout (http://www.pmob.co.uk/temp/2colcentred_contentfirst.htm).

I was wondering if the following effect can be achieved as on contact page from Mr. Andy Clarke website http://stuffandnonsense.co.uk/contact which is:
contact form remains "fixed" including text area, when you try to pull the resize handle (bottom right) -it doesn't respond.

Please, see printscreen form.png attached as to how I want form fields to be positioned (fixed,with no resize option).

Please, see html and css files attached.

Any advice is appreciated.