Hi Tom,
Let me clear out with some images
First of all on the left top when on mobile, the blue gradient needs to be white
On the slideout menu, the little blue gradient on home needs also to be white
So the problem is only on mobile and I think the gradient shown, is the background of the menu. But in the customizer I put no-repeat on the background.
I only want the gradient been shown on hover and current.
Hope that makes this more clear.
Gr. Pieter