Cutomize the frontend, so it looks like Explorer file view

Running lates WP and theme on https://www.knuds.net
I just love this theme, as it is as simple but uniqe as I want.
I have a lot of PDF documents on my site, that I want to display … just like you see files in a file-folder., and as you see on your picture (where you promote this theme).

Any idears how I can do this?

thanks
Knud
Denmark