import type * as CSS from 'csstype';
import type { ResponsiveValue } from './responsiveValue';
/**
 * Types for flexbox related CSS properties
 */
export interface customFlexboxProps {
    /**
     * The CSS `flex-direction` property
     */
    flexDir?: ResponsiveValue<CSS.Property.FlexDirection>;
}
export declare const customFlexBox: import("styled-system").styleFn;