Code block markdown not working.

[kloaf11]

It shows properly when previewing but it's not showing properly when the page renders on the actual site. But everything behind the scenes shows a proper code block.

site: https://kloaf11.github.io/Enhancement1.html

on site:

On preview:

Maybe something with me. but the fact it shows properly during the previewing and looking at the site code behind the scenes makes it seem like an issue.