ant-design/components/button/demo/size.md

order	title
2	[{zh-CN 按钮尺寸} {en-US Size}]

zh-CN

按钮有大、中、小三种尺寸。

通过设置 size 为 large small 分别把按钮设为大、小尺寸。若不设置 size，则尺寸为中。

en-US

Ant Design supports a default button size as well as a large and small size.

If a large or small button is desired, set the size property to either large or small respectively. Omit the size property for a button with the default size.

import { Button } from 'antd';

ReactDOM.render(
  <div>
    <Button type="primary" size="large">Large</Button>
    <Button type="primary">Default</Button>
    <Button type="primary" size="small">Small</Button>
  </div>,
  mountNode
);