Align Imagery in media grids

Hi all probably a simple one, I have a small image in a media grid that I want to align in the center of the grid. so image in center and then full width text below.

I cant for the life of me work out how to do this, any help please?


Do you mean like this?

Yes just like that! I only have 2 items the image and text but yes how is that done please?

As below! Any questions let me know