export declare const blackOnWhite: {
    backgroundColor: string;
    color: string;
};
export declare const blackOnGray: {
    backgroundColor: string;
    color: string;
};
export declare const whiteOnGray: {
    backgroundColor: string;
    color: string;
};
export declare const borderBottom: {
    borderBottomCharacter: string;
    backgroundClip: string;
};
export declare const borderTop: {
    borderTopCharacter: string;
    backgroundClip: string;
};