FIXED ,Create a portfolio, navbar links are not recognized

I have almost completed the “create a portfolio” project, however I can’t seem to successfully complete the links in the bar user story:
" *
7. The navbar should contain at least one link that I can click on to navigate to different sections of the page."

I have even copied the actual example page code to see if it worked better and it still does not work.

Where is the mistake here? Here is the code :
https://codepen.io/LeafT/pen/gOPprRx

Thanks for the help,

EDIT :Problem fixed,
i had overflow-x:hidden as a property of the body, removing it fixed the problem.