The antenati-website is a bit complicated. You first have to know the capital town of the provincia, in your case this would be Caserta. Then the time period you are looking for (Stato civile napoleonico, Stato civile della restaurazione, Stato civile italiano), then the town, birth / marriage / death records and then the year.
The records are digitised by the microfilms of the mormons. So it depends, what they have microfilmed many years ago, and it also depends on when this exact town started to record the civil registry office. Some towns started in 1809 (this is the earliest year I found), some started much later. Also not all towns go up to the same year, but mostly they are around 1900.
As much as I know, the project didn't finish yet, so if you don't find the town or the year you are looking for, just try again in some months or even years.
The publication program is from 2018 tought. I tried Verona and it looks complete.
Hope this helps.