Does anyone want to help me, how do I move the gray rectangle?

Question

Does anyone want to help me, how do I move the gray rectangle (id="bottom-cover") to bottom of border box, I know it's embarrassing 😅, but I need that.🙏
https://code.sololearn.com/W5zbTGCgDty5/?ref=app

Answer 1

Like this ?
https://code.sololearn.com/W0mROr3z30Od/?ref=app

Answer 2

👍 thank you very much bro. It turns out that simple 😁