Cannot import css files

My reactjs application is running successfully.

now I need to import css file (styles.css)

when I run the code after adding import "./styles.css"; it displays error unexpected token .

import {initializeBlock, Input, useBase, useRecords} from '@airtable/blocks/ui';
import React, { Component, useState } from "react";
import ReactDOM from 'react-dom';
import "./styles.css";

class  Access extends React.Component {

//content goes here

}

I