ant-design/components/input-number/demo/size.md

order	title
1	zh-CN en-US 三种大小 Sizes

zh-CN

三种大小的数字输入框，当 size 分别为 large 和 small 时，输入框高度为 40px 和 24px ，默认高度为 32px。

en-US

There are three sizes available to a numeric input box. By default, the size is 32px. The two additional sizes are large and small which means 40px and 24px, respectively.

import { InputNumber } from 'antd';

function onChange(value) {
  console.log('changed', value);
}

ReactDOM.render(
  <div>
    <InputNumber size="large" min={1} max={100000} defaultValue={3} onChange={onChange} />
    <InputNumber min={1} max={100000} defaultValue={3} onChange={onChange} />
    <InputNumber size="small" min={1} max={100000} defaultValue={3} onChange={onChange} />
  </div>
, mountNode);

.ant-input-number {
  margin-right: 10px;
}