Attaching to card issues

[OVERWATCH]

The attachment/banner looks fine on the preview but when I click the card, it's all messed up. I made the banner but I don't know what's the issue to fix. 

[Alina Kurishko]

Hi there, 

Welcome to the Atlassian Community! 

I tried reproducing the issue that you're seeing, but it seems that each card cover is displayed correctly for me. 

Maybe the issue is related to the pic's resolution/size? 

Could I ask you to create a ticket through https://trello.com/contact? This gives us access to a few more tools to help investigate, and we can discuss information that can't be shared in the community.

Alina | The Trello Team