Show the first element on the page that matches the selector.

def show_element(self, selector, by=By.CSS_SELECTOR):
        """ Show the first element on the page that matches the selector. """
        selector, by = self.__recalculate_selector(selector, by)
        selector = self.convert_to_css_selector(selector, by=by)
        selector = self.__make_css_match_first_element_only(selector)
        show_script = """jQuery('%s').show(0)""" % selector
        self.safe_execute_script(show_script)