Post Carousel: styling glitch

Hi!
I am loving the SiteOrigin widget bundle. Thank you so much!
One small glitch I hoped to get some help with is in the Post Carousel widget.
I am attaching a link to a screengrab of my problem. I don’t think that short horizontal line should be appearing–it does not seem to be in your how-to video & it is not there when I import a page template that includes a sample carousel. The line shifts to the right when I add a title to the widget but does not go away. I have added the widget to several pages, and each time the same line appears.

Any suggestions?

Stephanie
http://www.timelinesresearch.com/wp-content/uploads/2017/01/Screen-Shot-2017-01-24-at-8.27.44-PM.png