Is there a list of CSS codes to change to make our forms look prettier?

Also where is a list of easy to figure out CSS codes so we can make our forms look prettier?

The ids of the fields keep changing based on the number of fields on the form. However, there are different classes are each field. You may find the Fied IDs and Names on your JotForm, please follow the guide below:

https://www.jotform.com/help/146-How-to-find-field-IDs-and-names

It is recommended to use our advanced Form Designer to make any changes to the design of your form. You can also select the fields and inject the custom CSS to the form from the Form Designer itself. The guide with basic video tutorials of the Form Designer might help you in this regard.

https://www.jotform.com/help/300-Form-Designer-Tutorial-Let-s-create-fantastic-forms-

Hope this information helps!