I work with a talented professional. His name is Jody Brooks. He replied to my email: Find the CSS in the browser when it displays and then add the CSS to your form--not to display it.

I did and it worked. I added this to the form under Settings==> Custom CSS

Ugly line gone.

Thank you for sharing this! I can definitely see this being helpful for myself down the road.

In your initial post, you said you didn't want to use CSS -- I am glad you saw the light (or, I guess there was no other way..)