React Expanse Animation

npm install react-expanse --save

import React, { useState } from 'react'
import ReactDom from 'react-dom'
import Expanse from "../../src/index"

function Demo() {
  const [show, setShow] = useState(false);
  return  <div>
    <button onClick={()=>setShow(!show)}>点我点我</button>
    <Expanse show={show}>
      <div style={{width: '400px', background: "#f2f2f2"}}>
        {[1,2,3,4,5,6,7,8].map(item => <div key={item}>
          这里是内容啊内容啊
        </div>)}
      </div>
    </Expanse>
    </div>
}
ReactDom.render(
    <Demo />,
    document.getElementById('app')
)