我这么设置宽度了中间还是比其他的短呢，不是100%可以自适应宽度的吗
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>基米书</title>
<style type="text/css">
*{margin:0;padding:0}
#wrap{width:770px;margin:0 auto;}
#header{width:100%;height:200px;border:1px solid red;}
#mainody{width:100%;height:200px;border:1px solid blue;}
#footer{width:100%x;height:200px;border:1px solid green;}
.content{boder:4px solid #06C;padding:44px 15px 15px 15px;width:770px}
.book{background:url(images/07.png)no-repeat #9CF}
img{margin:10px 18px;border:1px solid #999;}
</style>
</head>
<body>
<div id="wrap">
<div id="header"></div>
<div id="mainbody">
<div class="content book">
<img src="images/01.png" width="80" height="80"/>
<img src="images/02.png" width="80" height="80"/>
<img src="images/03.png" width="80" height="80"/>
<img src="images/04.png" width="80" height="80"/>
<img src="images/06.png" width="80" height="80"/>
</div>
</div>
<div id="footer"></div>
</div>
</body>
</html>
