UICollectionView and UIStackView Homework
Use one outer StackView containing one CollectionView on top and a horizontal StackView at the bottom with two CollectionViews of equal sizes.
Use UICollectionViewCell to have two different color balls filled on the top collection view.
When user tap the top collection, move the balls to its appropriate containers bellow.
Please check the bellow mockup image for the layout and for better understanding.
