How to add text between columns in contact form?

Question

css

Good afternoon! The point is this. I have a feedback form on the page. It is divided into three parts. The first part has a name - the main data, and after that there are three blocks that need to be filled in and all these blocks are closed by a separate border. Then a small indent and the name of the second part - staff. And there are 3 more blocks to fill and, accordingly, one more such block. After that, the submit button. That is, in fact, the form should look like it is three different forms without buttons and at the bottom there is one common one that collects all the information. How can this be implemented? In general, I work with contact form 7 and elementor pro. It would be great if it was within the framework of these plugins!
I am attaching a link to the document. In the folder pages-> ozenka file
https://yadi.sk/d/DqIBx1avKuSEuQ