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.
Changing your form width should make the payment form into three columns. For example, 1010px;
Then you can adjust the custom CSS codes to have the same height. From the current custom CSS codes:
border: 1px solid #EFEFEF;
You have to add "Height" to the custom CSS codes.
Hope that helps. Let us know if you need further assistance.