export declare const useCustomStyles: (params: {
    hideOuterBorder: boolean;
}, options?: import("@mantine/styles").UseStylesOptions<string> | undefined) => {
    classes: {
        "mantine-Paper-root": string;
    };
    cx: (...args: any) => string;
    theme: import("@mantine/styles").MantineTheme;
};
