How to Change Access Denied Page

Hello.
I am new to Pi-Hole.
Is there a way to change the access denied page to a simple HTML page I have created?
Here is HTML code:

<!DOCTYPE html>
<html>
<link rel="shortcut icon" href="Pi-Hole.ico">
<link rel="apple-touch-icon" href="Pi-Hole.png">
<link rel="icon" sizes="192x192" href="Pi-Hole.png">
<h2><image src="Pi-Hole.png"></image> Access Denied.</h2>
<p><b>This Website Has Been Blocked Because This Is In Pi-Hole`s Blacklist.</b><p>

Pi-Hole-Access-Denied-Code.zip (32.1 KB)

This page may have the answer for you:

It works on the raspberry itself, but not on clients?
Only see "unable to connect" on other clients in network. Have i misconfigured something?
Using unbound too.

These are changes you make in how the Pi-hole serves the block page. This should be seen the same on all clients that connect to that page.

Thanks jfb,
i've read the logs and finally find out i did a stupid mistake with the nameserver (127.0.0.1#5335), so the ip was 127.0.0.53. It's working now!
Custom block page is now visible on all clients.

Edit: Is it possible to return the blocked website (i know html is not working) via php to the clients?

Wish i had more money, but 2nd donation is out now. Big thanks to the Devs for this great piece of Software!

Thanks That is Very Handy!