export declare const ExpandingCardStyles: {
    root: {
        width: number;
        border: string;
        boxShadow: string;
    };
    expandedCard: {
        selectors: {
            ':before': {
                width: number;
            };
        };
    };
};
export declare const PlainCardStyles: {
    root: {
        border: string;
        boxShadow: string;
    };
};