def greeting(ip, style='-', spacing=10):
    op_length = spacing + len(ip)
    styled_line = style * op_length
    print(styled_line)
    print(f'{ip:^{op_length}}')
    print(styled_line)

greeting('hi')
greeting('bye', spacing=5)
greeting('hello', style='=')
greeting('good day', ':', 2)