JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
If I understand your question correctly, you want to make your form mobile responsive. Is that correct?
You need to just enable the "Responsive Form" option of your form's preferences. Please check the screenshot below:
Hope this helps.
Do get back to us if you have any questions.