The transform-style property specifies how nested elements are rendered in 3D
space.
The transform-style CSS property specifies whether the children of the element are positioned in the 3D-space or are flattened in the plane of the element. If flattened, the child elements will not exist on their own in the 3D-space.
Note: This property must be used together with the transform property.
transform-style: flat|preserve-3d|initial|inherit;