I’ve logged in to you your WordPress.
I’ve try to save the changes on Theme Option, there is no problem.
On the Front, the sidebar floating well without glitch.
If you still got that error & the sidebar still glitch, please try to clear your Browser cache. On Google Chrome, open the developer tools using this keys “Comamand + option + i”, after the developer tool appear, hold the refresh icon until you got sub menu, choose “Empty cache & hard reload”.
Let me know if it doesn’t help.