.configure(background='black')

.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')
.configure(background='black')