Thanks @Ofi Khan
I don't think my situation is special. For example, if I have several articles set to automatically unpublish on a certain date/time, then the message 'No item found!' will display on my home page.
To visitors, this feels, and looks like there's an issue.
Your CSS code is a workaround that needs to be applied to every site. Imagine I have 100 websites using SPPB, I need to do this 100 times. Plus, if you ever change the HTML of this addon, the CSS rule will change and I'll need to do it all agian.
If your developers simply add a 'hide if no articles found' option, this solves it for everyine.
I'd appreciate if this could be added as a feature request as I feel it would be very beneficial.