vertical center an image in a table

Hi Tom,

I'm putting up a section on the home page showing the logos of media sites that have carried info about us. I created a table, so I could get an even spread of the logos across the page. But noticed when the viewing screen gets small, the logos get quite small and jumbled around because they aren't all the same height.

I don't know how to make the table responsive, so as the screen gets small, each cell would drop into a vertical alignment, so I thought I'd make the images vertically centered in the cell so they have some semblance of alignment. I don't see the ability to do that either in the wordpress controls.

Could you tell me how to do this?

Thanks,
Steig