It appears that I fixed what I was after, but it still doesn't separate, but I think that is only in desktop view, but in any case, I like the way it appears now, but for another change would be awesome, which is in mobile, I would like to remove that Welcome Visitor, BUT ONLY in mobile because of the black background which I want to appear on the desktop view because it stands out, but for mobile, I would like the welcome visitor with the black background to be hidden, but I don't know what I should hide.

I have tried:

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But it still shows the Welcome Visitor on the mobile navigation menu. How can I make that not show in mobile, but keep it as is on desktop view?