My Item got rejected can anyone tell me why?

My Item just got rejected after trying 3 submissions.
I got this in an email from the reviewer :
we found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again.

We appreciate the effort and time you’ve put into creating your item. And we’d be happy to help make sure your next entry will meet our submission requirements.

can anyone tell me why my item got rejected and what improvements required?
This is the one-page portfolio that I have been trying to submit.