Thank you guys. This solved my issue too.
The documents are VERY poor.
Would you please help me to understand how to make all images have max-heights?
I can see the array on this link:
https://www.advancedcustomfields.com/resources/gallery/
But again, poor explanation.
I love the plugin and when I say poor, I mean less info (for experts) and I’m just beginner.
Thank you,
T