Is there a way to set the html port number to 80 instead of 8080?
No, ports below 1000 require admin rights to be opened, O-S-C is not meant to be granted such rights.
It would be easier not have to put in the port.
I think i will look into some kind dns to make things easier for users.
You don’t have to set it, it’s 8080 by default.
Note that it’s not uncommon to have a webserver running on port 80, you may get more trouble than you think while trying to make it easier.