“Closed” not displaying

I’ve installed the plugin on this site: http://www.kinvercommunitylibrary.co.uk/

As you can see, it’s displaying the opening hours, but some of the styling is missing, and it’s not showing the “closed” days.

I’m using the theme “Upfront” from WPMUDEV, so I fully expect that there’s a conflict somewhere, but thought I’d ask here to see if you’ve got any ideas?

Thanks.