def __call__(self, declarations_str):
<EOL>properties = self.compute_css(declarations_str, self.inherited)<EOL>return self.build_xlstyle(properties)<EOL>
Convert CSS declarations to ExcelWriter style

        Parameters
        ----------
        declarations_str : str
            List of CSS declarations.
            e.g. "font-weight: bold; background: blue"

        Returns
        -------
        xlstyle : dict
            A style as interpreted by ExcelWriter when found in
            ExcelCell.style.