[WPMU DEV Dashboard] Display issues (transparency) with slide in


I when I go live with the slide in created via Hustle it appears to be transparent and slides in behind my webpage content instead of on top of.

It’s the same issue that was described here –


I have tried adding the custom CSS code mentioned in response to the above person’s question but still no luck.

Help would be greatly appreciated. I couldn’t quite follow the final explanation of what remedied the issue.