export declare class Border {
    left: string;
    top: string;
    right: string;
    bottom: string;
    all: string;
    color: string;
    width: string;
    [key: string]: any;
    constructor(param: string | any);
    toJSON(): {
        "left": string;
        "top": string;
        "right": string;
        "bottom": string;
        "all": string;
        "color": string;
        "width": string;
    };
    toString(): string;
}