Vertical Menu Shifted to the left

I went to check my website and found that the vertical menu on the right (menu meant for mobile devices) had been altered. The menu items are shifted to left and now I can only see half of the menu. I haven’t changed any of the CSS or touched any of the settings. Can anyone help me out and tell me why this might have happened and how to fix it?

Website: http://www.ctlegalconference.com/wordpress1/