Gianna's Home Rustic Farmhouse Desk 3 Drawer Wooden Vanity Makeup Beauty Jewelry Storage Organizer (Rustic White)

What are the dimensions of this item?

Is the back flat? If it were to be mounted, would it lay flush against the wall? I can't tell from the pictures.

What is the depth of the drawers!?

Would this fit on the back of a standard toilet? I have zero counter space and need something to organize my make up.