How to change font family and size?

Hi

Is it possible to change font family and size in my form in order to stylish?

Inside of this guide you can find how to change font on your form:

https://www.jotform.com/help/185-How-to-Change-Form-Fonts 

You can also use Google fonts:

https://www.jotform.com/help/100-How-to-Use-Google-Fonts-in-your-Form 

And inside of this guide you can find how to change font size:

https://www.jotform.com/help/186-How-to-change-font-size-on-forms 

Hope this will help. Let us know if you need further assistance.