<div id="myInfo" style={{'100%',height:'100%', overflow:'scroll'}}></div> 无效
<div id="myInfo" style={{'100%',height:'620px', overflow:'scroll'}}></div> 有效
<div id="myInfo" style={{'100%',height:'100%', overflow:'scroll'}}></div> 无效
<div id="myInfo" style={{'100%',height:'620px', overflow:'scroll'}}></div> 有效