struct ContentView: View {
   @Environment(ApplicationData.self) private var appData

   var body: some View {
      List(appData.userData) { book in
         CellBook(book: book)
            .listRowInsets(EdgeInsets(top: 0, leading: 0, bottom: 10, trailing: 0))
            .listRowBackground(Color(white: 0.95))
            .listRowSeparator(.hidden)
      }.listStyle(.plain)
   }
}