Hi @info18661 , as i addressed in another post by you, Wix have a new product called Editor X and you can visit it here > www.wix.com/editorx
You may be happy with what you see. Abilities to editor for Desktop, Tablet and Mobile as well as being able to set your own custom screen sizes and edit your design for them too.
This product is in beta, so you will have to request access on the Editor X website. PS. Parallax works on Mobile with sites built in Editor X!