It depends on how that screen is constructed, and which image file types you are using.
I’m assuming there are 2 graphic / image inputs for that screen.
If true, You may be better off uploading one (background) image, instead.
And, this is assuming you are referring to the white background.
Not the blue gradient background.
Not sure what file type you are using…
PNG files allow for transparent backgrounds.
JPEG files do not.