Matching fonts and theme in my appointment form

Please EDIT css as shown on the attached screenshot.

You do not need a CSS to fix the problem. You just need to configure the payment field to align it properly. I did it for you.

http://www.jotform.co/form/70541096053855

Now, you just need to re-embed the form. I would suggest using our iframe embed: https://www.jotform.com/help/148-Getting-the-Form-iFrame-Code.