import tkinter as tk

root = tk.Tk()
root.geometry("400x300")

# Crear un frame
frame = tk.Frame(root, width=300, height=200, bg="lightblue", relief="sunken", borderwidth=2)
frame.pack(padx=10, pady=10)

# Agregar widgets al frame
label = tk.Label(frame, text="Soy un label dentro del frame", bg="lightblue")
label.pack(pady=20)

# Iniciar la ventana
root.mainloop()