Do I have to use codepen to complete the front-end certification?

I just started using FCC and so far I love but I would rather use GitHub as well as post projects on my personal URL rather than codepen.io. My options are - I could just use GitHub and copy and paste the code to Codepen, but this just seems unnecessary. Or I could just only use Codepen and link this portfolio to my personal site, but from my understanding (and correct me if I’m wrong) employers like to see GitHub pages and the more projects I have in my GitHub account the better. Plus I’m not really used to Codepen and my personal preference is using a text editor and pushing to Github.

(TL;DR) My question is - when I submit for the front-end certificate, does anyone know if they will accept projects submitted on my Github page and/or personal URL rather than codepen.io?

Good to know, thanks!