interface RemOptions {
    maxWith?: number;
    minWith?: number;
    scale?: number;
}
/**
 * Set font size of HTML tag according to the design width.
 *
 * @param designWidth - The design width of the page.
 * @param options - The optional parameters.
 *
 * @example
 * // Sets the HTML font size based on a design width of 750 pixels
 * // with a maximum width of 2000 pixels and a minimum width of 375 pixels.
 * rem(750, { maxWith: 2000, minWith: 375 })
 *
 * @since 1.0.0
 */
declare const rem: (designWidth: number, options?: RemOptions) => void;
export default rem;