Expanding content cell with animation inspired by folding paper card material design. Create a new cell inheriting from FoldingCell. Add a UIView to your cell in your storyboard or nib file, inheriting from RotatedView. Connect the outlet from this view to the cell property foregroundView. Add constraints from this view to the superview. Connect the outlet from this top constraint to the cell property foregroundViewTop. Add other UIViews to your cell, connect the outlet from this view...