import { StyleOptions } from '../../types';
export interface ZIndexProps<T> {
    /**
     * The **`z-index`** CSS property sets the z-order of a positioned element and its descendants or flex items. Overlapping elements with a larger z-index cover those with a smaller one.
     *
     * @see https://developer.mozilla.org/docs/Web/CSS/z-index
     */
    style$ZIndex: T;
}
export declare const zIndex: <T = import("@johanneslumpe/css-types").ColumnCountProperty, Theme = never, Breakpoints = never>({ themeProp, }?: Partial<StyleOptions<ZIndexProps<T>, Theme, Extract<keyof Theme, string>>>) => (props: import("../../types").WithTheme<ZIndexProps<T>, Theme, Breakpoints>) => import("../../types").Styles | undefined;