Tabs breaking right column

Vladimir, I appear to have an issue with Tabs breaking the right column on my web page. It causes the right column to overlap the footer. You can see the following page with the Tab inserted; http://www.demonstration2.co.uk/test/ and you can view the following page with no Tab inserted; http://www.demonstration2.co.uk/test2/

Would it be possible for you to have a look? The Theme is based on Twentythirteen

https://wordpress.org/plugins/shortcodes-ultimate/