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Help - recreating this client logo slider

Hi

I am trying to recreate the below but not a clue where to start…

I understand I need a grid etc but I am not sure how to make the logos fade in and out randomly

Heres what I am trying to recreate under “work”
https://gritdigital.co.uk/#wrapper


Here is my public share link: LINK
(how to access public share link)