如何使用React在页面中心居中显示“确认窗口”提示

npm install react react-dom

import React from 'react';
import './ConfirmationWindow.css';

const ConfirmationWindow = () => {
  return (
    <div className="confirmation-window">
      <p>确认窗口提示内容</p>
      <button>确认</button>
      <button>取消</button>
    </div>
  );
}

export default ConfirmationWindow;

.confirmation-window {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
  padding: 20px;
  border: 1px solid #ccc;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

import React from 'react';
import ConfirmationWindow from './ConfirmationWindow';

const App = () => {
  return (
    <div className="app">
      <h1>页面标题</h1>
      <div className="center">
        <ConfirmationWindow />
      </div>
    </div>
  );
}

export default App;