how to add modal to a functional component in react code example

Example: react functional components modal

import React, { useEffect } from "react";import { createPortal } from "react-dom";import styled from "styled-components";import PropTypes from "prop-types"; const Portal = ({ children }) => {   const modalRoot = document.getElementById("modal"); const el = document.createElement("div");   useEffect(() => {      modalRoot.appendChild(el);   }, []);    useEffect(() => {      return () => modalRoot.removeChild(el);  });   return createPortal(children, el);};const Modal = ({ children, toggle, open }) => (   <Portal>      {open && (         <ModalWrapper>           <ModalCard>               <CloseButton onClick={toggle}>                  <img src="https:icon.now.sh/x/ff0000" alt="close" /     </CloseButton>      {children}    </ModalCard>    <Background onClick={toggle} />         </ModalWrapper>      )}   </Portal>); export default Modal; Modal.propTypes = {   children: PropTypes.arrayOf(PropTypes.object).isRequired, toggle: PropTypes.func.isRequired, on: PropTypes.bool.isRequired}; const ModalWrapper = styled.div`  position: fixed;  top: 50%;  left: 50%;  transform: translate(-50%, -50%);  width: 100%;  height: 100%;  display: flex;  justify-content: center;  align-items: center;`;const ModalCard = styled.div`  position: relative;  min-width: 320px;  z-index: 10;  margin-bottom: 100px;  background: white;  border-radius: 5px;  padding: 15px;  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);`; const CloseButton = styled.button`  position: absolute;  top: 0;  right: 0;  border: none;  background: transparent;  padding: 10px;  &:hover {        cursor: pointer;  }`; const Background = styled.div`  position: absolute;  width: 100%;  height: 100%;  top: 0;  left: 0;  background: black;  opacity: 0.5;`;