如题
<div class="ad" id="box"> <div class="loading"><img src="images/loading.gif" alt="图片加载中"/></div> <div class="pic"> <ul> <li><img src="images/ad2.jpg"/></li> <li><img src="images/ad3.jpg"/></li> <li><img src="images/ad4.jpg"/></li> </ul> </div> </div><!--ad结束-->
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<link href="css/main.css" rel="stylesheet" type="text/css"/>
<script src="js/setHomeSetFav.js" type="text/javascript" charset="gb2312"></script>
<script src="js/myfocus-2.0.1.min.js" type="text/javascript"></script>
<script src="js/mf-pattern/mF_fancy.js" type="text/javascript"></script>
<link href="js/mf-pattern/mF_fancy.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript">
myFocus.set({
id:'box',
})
</script>
</head>@charset "utf-8";
/* CSS Document */
*{
margin:0;
padding:0;
font-size:12px;
}
body{
background-color:#f5f5f5;
}
.top{
width:100%;
height:27px;
background:url(../images/top_bg.jpg) repeat-x;
}
.top_mid{
width:1000px;
margin:0 auto;
}
.top_mid li{
list-style-image:url(../images/li_bg.gif);
float:right;
width:70px;
line-height:27px;
}
.top_mid a:link,.top_mid a:visited{
color:#8e8e8e;
text-decoration:none;
}
.top_mid a:hover,.top_mid a:active{
color:#F00;
text-decoration:none;
}
.wrap{
width:1000px;
margin:0 auto;
}
.logo{
height:80px;
background-color:#FFF;
}
.logo_left{
width:200px;
height:80px;
float:left;
}
.logo_right{
width:260px;
float:right;
height:28px;
margin-top:25px;
color:#8e8e8e;
}
.logo_right img
{
vertical-align:middle;
margin-right:10px;
}
.tel{
font-family:"微软雅黑";
color:#f00;
font-size:16px;
}
.nav{
margin-top:5px;
height:40px;
}
.nav_left,.nav_mid,.nav_right{
float:left;
height:40px;
}
.nav_left{
width:10px;
background:url(../images/nav_left.jpg) no-repeat;
}
.nav_mid{
width:980px;
background:url(../images/nav_bg.jpg) repeat-x;
}
.nav_right{
width:10px;
background:url(../images/nav_right.jpg) no-repeat;
}
.nav_mid_left,.nav_mid_right{
float:left;
}
.nav_mid_left{
width:680px;
}
.nav_mid_right{
width:300px;
}
.nav_mid_left li{
float:left;
line-height:40px;
width:100px;
list-style-type:none;
text-align:center;
}
.nav_mid_left a:link,.nav_mid_left a:visited{
color:#fff;
text-decoration:none;
font-size:16px;
font-family:"微软雅黑";
}
.nav_mid_left a:hover,.nav_mid_left a:active{
color:#FF0;
text-decoration:none;
font-size:17px;
font-family:"微软雅黑";
}
.search_text{
width:190px;
height:25px;
margin-top:6px;
background:url(../images/search.jpg) no-repeat right center;
background-color:#FFF;
padding-right:25px;
border:1px solid #FFF;
}
.ad{
height:310px;
overflow:hidden;
}怎么会呢。。看不出
你看看,会不会高度塌陷了。