Need Feedback on Technical Documentation Project

Hello everyone,

Currently I completed Technical Documentation Project, I put a lot of effort to make it as good as I can. May be you might found out something I might have add, remove or make it better. Could you please look at it and share me your thoughts?

here is the link to my pen:

Thanks in advance.

I think it looks really good. For me the colors, fonts and layout are spot on. Nice job!

One thing I do notice is when I click on any of your navigation links, I am navigated a little far down and the section heading is cut off.