[Plugin: WP Featured Content Slider] Background Color overrunning Border on right side

I can not figure out why the background fill color is running past my border to the right side by 20 px. This occurs from the top of my image to the bottom of the border, regardless of whether the image is larger or smaller than the border itself. It happens on every featured post. Does anyone have any ideas of where I might look?
Thanks in Advance

http://wordpress.org/extend/plugins/wp-featured-content-slider/