well hello there.
I understand that the stylesheet controls the pages layout.
I used chrome to see what the settings were on the form text boxes before i went looking for how to set them.
I saw that there were no size styles set. I changed the sizes inside the contact form 7 tags which, from how i understand the help file, will add a style to the element. Which it does not.
I added the css to my stylesheet and it works now.
However… the contact form tags do not work to change the width or sizes of any of the elements.
This is a great idea and would save a lot of manual css customization.