ant-design/components/button/demo/block.tsx

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

const App: React.FC = () => (
  <Space direction="vertical" style={{ width: '100%' }}>
    <Button type="primary" block>
      Primary
    </Button>
    <Button block>Default</Button>
    <Button type="dashed" block>
      Dashed
    </Button>
    <Button type="link" block>
      Link
    </Button>
  </Space>
);

export default App;