ant-design/components/message/demo/custom-style.md

order	title
6	[{zh-CN 自定义样式} {en-US Customized style}]

zh-CN

使用 style 和 className 来定义样式。

en-US

The style and className are available to customize Message.

import { Button, message } from 'antd';
import React from 'react';

const success = () => {
  message.success({
    content: 'This is a prompt message with custom className and style',
    className: 'custom-class',
    style: {
      marginTop: '20vh',
    },
  });
};

const App: React.FC = () => <Button onClick={success}>Customized style</Button>;

export default App;