import { StyleOptions } from '../../types';
export interface BackgroundSizeProps<T> {
    /**
     * The **`background-size`** CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, or constrained to fit the available space.
     *
     * @see https://developer.mozilla.org/docs/Web/CSS/background-size
     */
    style$BackgroundSize: T;
}
export declare const backgroundSize: <T = string, Theme = never, Breakpoints = never>({ themeProp, }?: Partial<StyleOptions<BackgroundSizeProps<T>, Theme, Extract<keyof Theme, string>>>) => (props: import("../../types").WithTheme<BackgroundSizeProps<T>, Theme, Breakpoints>) => import("../../types").Styles | undefined;