Hello

Thank you for your query.

Kindly check the following screenshot to see from where the overlay is coming.

Please add the following css rule in custom css section to remove the overlay:

.sp-page-title::before {
    background: unset;
}

Thanks for that Ariba,

However, the blog layout menu item doesn't have a custom CSS option in the menu settings?

Where else can I put this code?

Thanks, Zack

You are welcome.

Please check the screenshot - I have put the code in the default custom css section.