I am really enjoying the plugin and it works great. I have one little wrinkle I cannot seem to fix. I have placed the short code in a side widget, with an auto thumbnail. Everything works fine EXCEPT, I cannot seem to center the thumbnail in the widget. It justifies to the left. I have tried using a text widget and a visual editor in the sidebar, and the short code reacts the same in both. Everything is functioning great, I just want to center the thumbnail to line up with the rest of the items above and below it on the page.
Here is a link to the site in case that helps:
Thanks for a great plugin.