这是跟老师一起做的，为何box1和老师所展现的box1不一样
<style type="text/css">
.box1{width=60%;height:40px;background:#00F;position:absolute;}
.box2{width:70%;height:30px;background:#C00;position:fixed;}
.content{width:80%;height:160px;background:green;}
.wrap{width:99%；padding:10px;height:400px;background:#999;}
.box{width:88%;height:200px;background:#FFCC00;}
</style>
</head>
<body>
<div class="wrap">
<div class="box">
<div class="box1">box1</div>
<div class="box2">box2</div>
</div>
<div class="content">centent</div>
</div>
</body>
