Hide fields but keeping f number

Hello, first of all, great plugin! Thanx.

My problem:

I have a list of about 20 fields.
Now i want to keep 19 of them and hide 1.
I put the field i want to keep on ” hidden constant”
Then this field is gone.
Butttt, the other fields seem to have another f number or just do not work anymore.

My question:
Let’s say i want to do a ” display:none” on field number 10 (f10)
What css can i use for this, i tried all possible options, cannot find it.

Thanx in advance.

Wil