How to reduce the size of Middle name field

wanting to reduce the size some of the boxes (such as middle
name) and perhaps increase the size of first and last.

Hi Ben,

Since there was a sample jotform given by my colleague Raul and myself as well as the Full Name tool that has the same middle name field, I would like to suggest that you go over our responses and find the one most suiting for your requirements and we will be happy to help you set it all up properly, just let us know of your preference.

Best Regards,
Ben