CSS Code to allow PNG image to ‘scroll’

Hi

I am building a site and am creating a ‘Portfolio’ page with PNG images. I want the user to be able to ‘scroll’ these images as if they were a webpage as they are a lot longer than the image box. Like a iFrame but with a PNG rather than a live site. An example of what I am trying to do is on @bycrawford site.

Is there a setting or CSS code I could use?

Any input greatly received.

1 hour ago, LouLouHarvey said:

I now have the CSS code courtesy of SquareStylist, however it appears that it only works on Classic Editor and I have got Fluid Engine. Is there a way of adding a Classic Editor block?

Can you share the page URL?

1 hour ago, Web_Solutions said:

Can you share the page URL?

Thanks for the response. I did a bit of digging and managed to find out how to add a Classic block. I really appreciate you being willing to help.