如何用css样式导出到excel（附代码示例）

我按照这个教程将数据从数据库导出到excel，我需要添加一些css样式，因为我需要将 "Date "字体加粗和一些标题宽度。

创建数据

//export to excel
    const [data, setData] = React.useState([])
    const customHeadings = testsList.map(item => {
        return ({
            "Date": item.date
        })
    })
    React.useEffect(() => {
        setData(customHeadings)
    }, [])

导出按钮

import { ExportToExcel } from "./ExportToExcel.js"
<ExportToExcel apiData={data} fileName="export_testu" classb="btn btn-default" button="Export testů" />

导出到Excel.js

import React from 'react'
import * as FileSaver from "file-saver";
import * as XLSX from "xlsx";

export const ExportToExcel = ({ apiData, fileName, button, classb }) => {
  const fileType =
    "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=UTF-8";
  const fileExtension = ".xlsx";

  const exportToCSV = (apiData, fileName) => {
    const ws = XLSX.utils.json_to_sheet(apiData);
    const wb = { Sheets: { data: ws }, SheetNames: ["data"] };
    const excelBuffer = XLSX.write(wb, { bookType: "xlsx", type: "array" });
    const data = new Blob([excelBuffer], { type: fileType });
    FileSaver.saveAs(data, fileName + fileExtension);
  };

  return (
    <button onClick={(e) => exportToCSV(apiData, fileName)} className={classb}>{button}</button>
  );
};