Why can't I see the top park of my tkinter window?

Question:
Why can’t I see the top park of my tkinter window?
Repl link/Link to where the bug appears:
https://replit.com/@StaticInternet/FinancePST?v=1
Screenshots, links, or other helpful context:

code snippet
# Import Required Library
from tkinter import *
from tkcalendar import Calendar
from datetime import date as dt

# Create Object
root = Tk()

# Set geometry
root.geometry("640x480")

root.title("FinancePST - Hrileena Paul")

# Add Calendar
cal = Calendar(root, selectmode = 'day')

cal.pack(pady = 20)


def grad_date():
	date.config(text = "Selected Date is: " + cal.get_date())

# Add Button and Label
Button(root, text = "Get Date",
	command = grad_date).pack(pady = 20)

date = Label(root, text = "")
date.pack(pady = 20)

# Change the label text
def show():
    label.config( text = clicked.get() )
  
# Dropdown menu options
options = [
    "Groceries", 
	"Mortgage", 
	"Car Loan", 
	"Gas Bills", 
	"Travel and Lesiure", 
	"Education"
]
  
# datatype of menu text
clicked = StringVar()
  
# initial menu text
clicked.set( "Select Expense" )
  
# Create Dropdown menu
drop = OptionMenu( root , clicked , *options )
drop.pack(side=TOP)
  
# Create button, it will change label text
# button = Button( root , text = "click Me" , command = show ).pack()
  
# Create Label
# label = Label( root , text = " " )
# label.pack()
  

# Execute Tkinter
root.mainloop()

I followed the link you provided. I have all the elements of your application displayed correctly.

Can you send a video recording of the screen with a demonstration of the error (Loom is recommended)?