Cards getting covered by Sidebar

Hey, I am loving the plugin but am having a problem with card images getting covered by the sidebar or being cut off by the white space on the sides if they are not centered within each post. Example: http://hearthstonechampion.com/2015/05/all-about-hearthstone-deck-building/

Any cards that are on the far left or right of a post are getting covered by the sides. My site does not have a background set. Can you help me with this issue? Thanks for your time.

https://wordpress.org/plugins/hearthstone-cards/