Photo size and content in Mobile mode

Hello,

Any suggestions on how can i make the mobile version of Frond-End Grid style more appropriate? You see the thing is, one review takes the whole screen because of the portrait picture and it looks really messy. i have 2 columns for mobile and it does not look anything like the pictures you guys have uploaded here as sample. i mean in the sample it looks awesome. The pictures are kinda square and everything fits perfectly, on a whole phone screen you could visibly see 4 reviews at least. But in reality 2 review in 2 column grid takes the whole screen with a long inappropriate picture size. I just wish there was an auto image visible height. for example it would show a long image in a square layout but once a customer opens the review the whole image pops out.

Any css codes? shortcodes? anything that i could at least make it look a bit appropriate?

Thank you,