extension albumDetayi: UICollectionViewDelegateFlowLayout {
func collectionView(_ collectionView: UICollectionView, layout
collectionViewLayout: UICollectionViewLayout, sizeForItemAt
  indexPath: IndexPath) -> CGSize {
    let width = Int((collectionView.frame.width / columns)-(inset
   + spacing))

    var randomSize: Int
    if random == true {
        randomSize = 64 * Int(arc4random_uniform(UInt32(3))+1)
    } else {
        randomSize = width
    }
    return CGSize(width: randomSize, height: randomSize)
}
func collectionView(_ collectionView: UICollectionView, layout
 collectionViewLayout: UICollectionViewLayout, insetForSectionAt
  section: Int) -> UIEdgeInsets {
    return  UIEdgeInsets(top: inset, left: inset, bottom: inset,
  right: inset)
}
func collectionView(_ collectionView: UICollectionView, layout
  collectionViewLayout: UICollectionViewLayout,
  minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    return spacing
}
func collectionView(_ collectionView: UICollectionView, layout
  collectionViewLayout: UICollectionViewLayout,
  minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
    return linespacing
   }
  }