I'm wondering if there's a way to get a custom error or web page when my apache2 server is offline. I use the Raspberry Pi for it, (running apache2). Is there any way to make it so that when it's offline, your computer would display a certain HTML file? Maybe there's a way to make it so that when you first go to the page, it will download that HTML file with a bit of code telling the computer to display it if there's a 404 error (or whatever error you would get)?