Main Text Font doesn't change

When using the option to “Specify Font Details”, selecting the font for ‘Main text’ has no effect, it stays at Courier font.

When looking at the source code of the page, the Main text’ has around it which seems to force it to always use the settings, for 'pre,code'

See: http://strategiccommunicationconsultants.com/

Thanks for any suggestions.

https://wordpress.org/plugins/text-slider/