I understand what you mean and it is much simpler than using Parallax. All you need to do is create a container or div to put everything in and then make the background of the body, plain white. This will then give the effect you want.
I love the font you’ve used for the subheading, it adds a really nice touch.
Personally, I would centre the lists and align them with justify but that’s personal preference.
I would also make the footer smaller and increase the gap between the line with the Wiki on it and that.
Overall, good job and once you put everything in one big div, it will look even better and how you want it to