text: import tkinter as tk
  
  from ui.pages.create_customer_page import CreateCustomerPage
  from ui.pages.customer_administration_page import CustomerAdministrationPage
  from ui.pages.room_administration_page import RoomAdministrationPage
  from ui.pages.start_page import StartPage
  
  if __name__ == "__main__":
      root = tk.Tk()
      root.title("HI")
      main = StartPage(root)
      main.pack(side="top", fill="both", expand=True)
      root.wm_geometry("400x400")
      root.mainloop()
  
  
  