export declare namespace BoxStylesFormatters {
    namespace ClassName {
        function fraction(key: string, value: string): string;
        function svg(selector: string): string[];
    }
    namespace Value {
        function rem(value: number): string;
        function px(value: number): string;
        function fraction(value: string): string;
        function widthHeight(key: string, value: string): string;
        function variables(prefix: string): (key: string, value: string) => string;
        function svgVariables(prefix: string): (key: string, value: string) => string;
        function gridColumns(key: string, value: number): string;
        function gridColumn(key: string, value: string | number): string;
        function ms(key: string, value: number): string;
        function rotate(key: string, value: number): string;
        function flip(key: string, value: string): "-1 1" | "1 -1";
    }
}