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.
When you say form field taller do you mean you would like to make them larger? What is the URL of the form template you liked and how you would like to change it? Let us know and we can provide suggestions.
The usual solution is to use Custom CSS Inject feature to change the form CSS.