Removing parent view of the global and home CardViews. For the outline drop shadow to appear, a view parent must have enough space to draw that shadow.  The parent was preventing that by using wrap content without padding or margin applied to the entire container. I did not think the container was necessary so I removed it and the drop shadow returned.  Also, CardView does not like padding, it was not respecting it so I moved it to the child view.  The child view also had to give a gravity to the parent to properly align itself.