ant-design/components/radio/demo/radiobutton-solid.tsx

import React from 'react';
import { Radio } from 'antd';

const App: React.FC = () => (
  <>
    <Radio.Group defaultValue="a" buttonStyle="solid">
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b">Shanghai</Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
    <Radio.Group defaultValue="c" buttonStyle="solid" style={{ marginTop: 16 }}>
      <Radio.Button value="a">Hangzhou</Radio.Button>
      <Radio.Button value="b" disabled>
        Shanghai
      </Radio.Button>
      <Radio.Button value="c">Beijing</Radio.Button>
      <Radio.Button value="d">Chengdu</Radio.Button>
    </Radio.Group>
  </>
);

export default App;