There is the little test thingy that can check if you did you project right or if some stuff are missing, in some of my html/css projects I am seeing and able to use it but in some of them no matter what I tried I am unable to find it and cannot use it. please help me
Welcome, xshinigamix.
If you are referring to this:
It is called the Test Suite.
You need to paste the CDN link in your code pen:
<script src="https://cdn.freecodecamp.org/testable-projects-fcc/v1/bundle.js"></script>
Hope this helps
Thank you 