I’m not seeing any blurring on the loading screen, either the version you were looking at or recompiled with the latest Adventuron Classroom when I did the bug fix. Can you tell me the browser/machine you’re using to view the game so I can see if I can check with a setup closer to yours?
Confirmed that the issue still happens with v0.65 (which is the latest version via the website
In the “<style> body, html {”, if you add “image-rendering: -moz-crisp-edges;” to that section it renders the loading screen correctly. This was figured out from https://stackoverflow.com/questions/388492/firefox-blurs-an-image-when-scaled-through-external-css-or-inline-style
A fixed file should now be uploaded. While doing some additional testing, the file didn’t work on IE or Edge browsers for me.