Making 'product has been added to cart' visible

The ‘Product has been added to cart’ comes up behind the cart, so it is hardly visible on the website. (not like as shown here.) I would just like have the basket, the word ‘cart’ and ‘£0.00’ in black on the white website background. (Non colour cart.) Is this possible?
I see there is an option to show cart, which I’ve tried unchecking, but it doesn’t remove the cart.
Does anyone have any suggestions please?