I have tried it, but it doesn’t seem to fix the problem. I have inserted the new code on the child theme template file sidebar.php (which I copied from your parent theme file). Would it be wise to do the change directly on the original file of the theme?
I do like the new boxed design and the shadowing, but I’m a bit sceptical about the dark/icon effect. But I guess it serves a purpose.
Please, help me out with any new suggestions you might have and thank you for your quick reply.