Last item on nav -bar does not work

the last item on my “nav-bar” does not work.
here is the message on the test error

13. When I click on a navbar element, the page should navigate to the corresponding section of the “main-doc” element (e.g. If I click on a “nav-link” element that contains the text “Hello world”, the page navigates to a element that has that id and contains the corresponding .

Every .nav-link should have an href value that links it to its corresponding .main-section (e.g. href="#Introduction"). Check that these .main-section ids have corresponding href values : Using_CSS,Learm_more : expected 2 to equal 0 AssertionError: Every .nav-link should have an href value that links it to its corresponding .main-

here is my codepen

You have two typos in your HTML…

<a href="Using_CSS" class="nav-link">Using CSS</a>

That href is missing something.

<section class="main-section" id="Learm_more">

That id isn’t quite what it says in the corresponding nav-link.

thank you for your help geod eye i double checked it and missed it. thanks again i really appreciate the help this community is offering , great job!