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

order	title
3	[{zh-CN 三种大小} {en-US Sizes}]

zh-CN

三种大小的选择框，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

The height of the input field for the select defaults to 32px. If size is set to large, the height will be 40px, and if set to small, 24px.

import { Select, Radio } from 'antd';

const { Option } = Select;

const children = [];
for (let i = 10; i < 36; i++) {
  children.push(<Option key={i.toString(36) + i}>{i.toString(36) + i}</Option>);
}

function handleChange(value) {
  console.log(`Selected: ${value}`);
}

const SelectSizesDemo = () => {
  const [size, setSize] = React.useState('default');

  const handleSizeChange = e => {
    setSize(e.target.value);
  };

  return (
    <>
      <Radio.Group value={size} onChange={handleSizeChange}>
        <Radio.Button value="large">Large</Radio.Button>
        <Radio.Button value="default">Default</Radio.Button>
        <Radio.Button value="small">Small</Radio.Button>
      </Radio.Group>
      <br />
      <br />
      <Select size={size} defaultValue="a1" onChange={handleChange} style={{ width: 200 }}>
        {children}
      </Select>
      <br />
      <Select
        mode="multiple"
        size={size}
        placeholder="Please select"
        defaultValue={['a10', 'c12']}
        onChange={handleChange}
        style={{ width: '100%' }}
      >
        {children}
      </Select>
      <br />
      <Select
        mode="tags"
        size={size}
        placeholder="Please select"
        defaultValue={['a10', 'c12']}
        onChange={handleChange}
        style={{ width: '100%' }}
      >
        {children}
      </Select>
    </>
  );
};

ReactDOM.render(<SelectSizesDemo />, mountNode);

.code-box-demo .ant-select {
  margin: 0 8px 10px 0;
}

.ant-row-rtl .code-box-demo .ant-select {
  margin: 0 0 10px 8px;
}

#components-select-demo-search-box .code-box-demo .ant-select {
  margin: 0;
}