Theme Rejected - Can anyone help me figured it out why?

Hi, I am new in theme forest. I have uploaded a one paged simple “404 page”. I did a lot of study on how the theme should. I tried to make things right, but it’s rejected. Here is the link of the template:

Can anyone help me pointing the problems with this template? And please give me some tips and suggestions.

TF pays huge attention to design. This item was not designed.