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Show data on hover

Hello everyone,

I’m trying to reproduce this website
I was wondering how could I show the text corresponding to the image on hover. If you could give me some hints I would be really greatful.
For the moment I create a list of data using CMS but I don’t know if it is possible to connect CMS data with the right image.

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