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Tile template with CMS

I’m looking a way to make/find a tile template to present several projects.
I wonder if it’s possible to merge the power of CMS collections with dynamics tiles.

Here an exemple of website : http://www.engram.it/album/architecture/

Maybe there is a way to do it using grid and a collection list, but i don’t want my pictures to resize, crop or have differents marges between them.
For now, i only managed to have a square type of things, but for some picture, i really dont like the square crop it makes.
Here the link to see my website, i would really like advices, tips, to do a tile template !

https://preview.webflow.com/preview/studio-cob?utm_medium=preview_link&utm_source=designer&utm_content=studio-cob&preview=4a2efe7d692cf578647ac48675b770bc&mode=preview

Thank you !
(and sorry for my english !)
Côme