Can I create a custom HTML page accessible from a client browser without making a channel?

I’d like to be able to allow users to go to a custom URL from their browsers while connected to the Kolibri (e.g. 10.10.10.10/mypage.html). On other servers I’ve worked on in the past, I can add such a page by ssh-ing into the device, adding my HTML file into the www directory, and then accessing it freely from the client. I’m using a Raspberry Pi 0w to run my Kolibri server, and I found the www directory at /var/www, but I can’t figure out how to access HTML files I create there.

For example, I’d love to be able to create mypage.html in the www directory of the RPi, then go to 10.10.10.10/mypage.html from my client browser and see it, but all I get is an error when I try to access that page.