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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def outer_horizontal_border_bottom(self):
 """ The complete outer bottom horizontal border section, including left and right margins. Returns: str: The bottom menu border. """

        return u"{lm}{lv}{hz}{rv}".format(lm=' ' * self.margins.left,
                                          lv=self.border_style.bottom_left_corner,
                                          rv=self.border_style.bottom_right_corner,
                                          hz=self.outer_horizontals())