export declare class GlobalPositionStrategy {
    private _topOffset;
    private _bottomOffset;
    private _leftOffset;
    private _rightOffset;
    private _alignItems;
    private _justifyContent;
    private _width;
    private _height;
    /**
     * Sets the top position of the overlay. Clears any previously set vertical position.
     * @param value New top offset.
     */
    top(value?: string): this;
    /**
     * Sets the left position of the overlay. Clears any previously set horizontal position.
     * @param value New left offset.
     */
    left(value?: string): this;
    /**
     * Sets the bottom position of the overlay. Clears any previously set vertical position.
     * @param value New bottom offset.
     */
    bottom(value?: string): this;
    /**
     * Sets the right position of the overlay. Clears any previously set horizontal position.
     * @param value New right offset.
     */
    right(value?: string): this;
    /**
     * Sets the overlay width and clears any previously set width.
     * @param value New width for the overlay
     */
    width(value?: string): this;
    /**
     * Sets the overlay height and clears any previously set height.
     * @param value New height for the overlay
     */
    height(value?: string): this;
    /**
     * Centers the overlay horizontally with an optional offset.
     * Clears any previously set horizontal position.
     *
     * @param offset Overlay offset from the horizontal center.
     */
    centerHorizontally(offset?: string): this;
    /**
     * Centers the overlay vertically with an optional offset.
     * Clears any previously set vertical position.
     *
     * @param offset Overlay offset from the vertical center.
     */
    centerVertically(offset?: string): this;
}