Thanks for the reply. You would have to join the site to see the problem. Here is the URL: https://earthcointalk.org/activity/
It occurred after the last cbox update. I updated WordPress at the same time. I also had to remove several sub-items from the menu as they were getting lost behind the slider and content body.
I have used firebug and changed the z-index on some elements, but it doesn’t work when adding it to the custom css box in the cbox dashboard. I like the stock cbox theme and wasn’t wanting to set up a child theme for this one problem unless it was absolutely necessary.
Thanks, adding my site to the showcase would be great. It is a mostly stock cbox theme with no child and very little custom CSS. https://earthcointalk.org