Horizontal Display

I read the post prior to this regarding same topic but did not find a remedy. I cannot identify any conflict with the horizontal display when I look at it using Firefox. It is a live site so I really do not want to disable any plugins unless there is no other way.

I have only placed the shortcode at bottom of page to test and style it. I intend to place it in widget at top of site where current login is, once I get it styled properly.

Is there any way around disabling plugins? Like I said I inspected it using Firefox, turned other styling on and off with no success.

http://www.theblogfarm.com/

https://ww.wp.xz.cn/plugins/shortcode-menu/