    def style(self):
        """
        Turn the css styles for this element into an openpyxl NamedStyle.
        """
        if not self._style_cache:
            self._style_cache = style_dict_to_named_style(self.style_dict, number_format=self.number_format)
        return self._style_cache
Turn the css styles for this element into an openpyxl NamedStyle.
ptstructure/table/tablepyxl/style.py