Block port 80 on certain IP

Host 192.168.88.55 has a website (on 80 port). I would like to block 80 port on this host.

I added role

ip firewall filter> add chain=forward dst-address=192.168.88.55 protocol=tcp dst-port=80 action=drop

but it did not help – website is opened when LAN’s user to enter 195.168.88.55:80 in his browser.
How I can right to block port on certain host?

If web-server is in the LAN (user PC in the same subnet 192.168.88.0/24), traffic between user and server goes directly, and You can’t filter it.