[Graphene] Strange alignment issue

Hello,

I have a post that contains pictures. If a picture has a caption, then the picture is more to the right than without a caption.

What I would like to see, is that the alignment is all the same: all pictures to the left, under the ordered list number.

You can see this at http://www.vroom.cc/wordpress/index.php/deployment-visio-2013-and-project-2013-with-click-to-run/

With kind regards,
Willem-Jan

https://wordpress.org/themes/graphene/