图片自适应

//-----------------------------图片自适应------------------------------------------------
<div className="bg-cover" style={{
    width:"100%",
    height: "415px",
    // backgroundImage: `url("${update_file_url(cover)}")`,
    backgroundColor:"#F3F3F4",
    backgroundRepeat: "no-repeat",
    backgroundSize: "100% 100%",
    MozBackgroundSize: "100% 100%",
    textAlign: "center",
    lineHeight:"410px",
}}>
    <img style={{ width: "auto", height: "auto",maxWidth:"100%",maxHeight:"415px",}} src={update_file_url(cover)}/>
</div>