Problem with the design

Hi,

first, the plugin is great 🙂 But I have one problem. I’m from germany and hope the english from school is understandable 😉

The calender design itself is great. But when I try a entry, the post is on the left side under the sidebar.

http://www.langholz-fotodesign.de/advent-calendar/1-december-2015/

Can you help me?

Thanks
Kristin

https://ww.wp.xz.cn/plugins/advent-calender/