为什么我提交的代码，看不到花枝的图片？
为什么我提交的代码，看不到花枝的图片？别人提交的怎么就有显示？
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>图片背景</title>
<style type="text/css">
body{ margin:0;}
div{background:#460E29;width:700px;padding:20px}
img{？background:url(http://img1.sycdn.imooc.com//5385ac820001905201440133.jpg); width:95px;height:95px;padding:1px 20px 37px 30px;margin-right:10px;
</style>
</head>
<body>
<div><img src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg" /><img src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg" /><img src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg" /><img src="http://img1.sycdn.imooc.com//5385acb000013b0d00950095.jpg" /> </div>
</body>
</html>
