Changing style

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. The article shows people, with suitable HTML & CSS skills, how to change the appearance of their Contact Form 7 Forms to meet their particular requirements.

Thanks, but I had read all of this yet. I finally found the solution jut before you answer.

Thank you ??

Hewy, melody.r, can you post the solution that you found?

Of course.
I found the solution here : https://www.wpsnippet.com/creating-responsive-two-column-form-using-contact-form-7/