import tkinter as tk

def draw_square(x, y, size, color):

   canvas.create_rectangle(x, y, x + size, y + size, fill=color)

def draw_cascade(x, y, size, color):

   draw_square(x, y, size, color)

   if size > 5:

       draw_cascade(x + 10, y + 10, size - 20, color)

root = tk.Tk()

canvas = tk.Canvas(root, width=300, height=300)

canvas.pack()

draw_cascade(10, 10, 280, "red")

draw_cascade(20, 20, 260, "blue")

draw_cascade(30, 30, 240, "green")

draw_cascade(40, 40, 220, "yellow")

draw_cascade(50, 50, 200, "orange")

draw_cascade(60, 60, 180, "purple")

draw_cascade(70, 70, 160, "pink")

draw_cascade(80, 80, 140, "brown")

draw_cascade(90, 90, 120, "black")

draw_cascade(100, 100, 100, "white")

draw_cascade(110, 110, 80, "grey")

draw_cascade(120, 120, 60, "cyan")

draw_cascade(130, 130, 40, "magenta")

draw_cascade(140, 140, 20, "lime")

draw_cascade(150, 150, 0, "maroon")

root.mainloop()