Are there specific CSS or HTML adjustments I can make to hide the frame border when displaying the Coppermine gallery?

To hide the frame border when displaying the Coppermine gallery, you can use CSS to target the specific element that contains the frame border and set its border property to none. This will effectively remove the border from the frame.

<style>
    #cpg_main_table {
        border: none;
    }
</style>