What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Yes it is possible to achieve your requirement. Please inject the following custom css code in your form to add a outer border in form:
border: 2px solid black;
The following guide should help you on how to inject custom css code in form: http://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes
You may also like to take a look at our form designer to further customize the look of your form: http://www.jotform.com/help/300-Form-Designer-Tutorial-Let-s-create-fantastic-forms
Hope this helps.
Do get back to us if you have any questions.