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个回答

荼酒

2015-11-11 11:33:54

已采纳

你右键审查元素检查看看多出的是什么，就知道该怎么改了。

0
echo_kinchao

2015-11-12 08:01:48

用浏览器自带的调试工具调试试试吧

0
李晓健

2015-11-11 12:09:26

拿你的代码看没有问题呀

0
习惯性

2015-11-11 11:09:28

*{ margin: 0px;
padding: 0px;
}
body{background-color: #f5f5f5;}
.top{
width: 100%;
height: 27px;
background:url(../images/top_bg.jpg) repeat-x;
}
.top_content{
width: 1000px;
margin: 0 auto;
}
.top_content li{
float: right;
width: 70px;
line-height: 27px;
list-style: none;
text-align: center;
}
.top_content a:link,.top_content a:visited{
text-decoration: none;
color:#8E8C8C;
font-size: 12px;
}
.top_content a:hover,.top_content a:active{
text-decoration: none;
color: #F64343;
font-size: 12px;
}
.mrap{
width: 1000px;
margin: 0 auto;
}
.logo{
height: 80px;
background-color:#FFFFFF;
}

.logo_left{
float: left;
width: 200px;
}
.logo_right{
float: right;
width: 300px;
margin: 31px -120px;
color:#8E8C8C;
}
.logo_right img{
margin-right:10px;
vertical-align: middle;
}
.tel{
font-size: 16px;
color: #F52525;
font-family: "微软雅黑";
}
.nav{
height: 40px;
}
/*

.nav_left{
width: 10px;
background:url(../images/nav_left.jpg) no-repeat;
float: left;
height: 40px;
}*/
.nav_mid{
width: 1000px;
background-color:#776e67;
height: 40px;
-webkit-border-radius:6px;/*用了css3圆角不引用圆角图片*/
-moz-border-radius: 6px;
-o-border-radius: 6px;　
}
/*
.nav_right{
width: 10px;
background: url(../images/nav_right.jpg) no-repeat;
height: 40px;
float: right;
}

.mid_left,.mid_right{
float: left;
}
*/
.mid_left,.mid_right{
float: left;
}
.mid_left{
width: 680px;
}
.mid_right{
width: 300px;
}
.mid_left li{
float: left;
list-style: none;
width: 100px;
text-align: center;
}
a:link,a:visited{
text-decoration: none;
color: #fff;
font-size: 18px;
font-family: "微软雅黑",
}
a:hover,a:active{
text-decoration: none;
color: #ff0;
font-size: 18px;
font-family: "微软雅黑",
}
.txt{
width: 120px;
height: 20px;
background:url(../images/search.jpg) no-repeat right center;
background-color: #fff;
padding-right:25px;
border:1px solid #fff;
}
.ad{
margin-top: 5px;
height: 310px;
overflow: hidden;
}

0
荼酒

2015-11-11 11:08:34

多打了一个input 并且这个input没有放在nav里面，所以导致换行。仔细检查看看吧

0
习惯性

2015-11-11 11:08:12

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>企业网站</title>
<link rel="stylesheet" type="text/css" href="css/main.css">
<script type="text/javascript" src="js/myfocus-2.0.1.min.js"></script>
<script type="text/javascript" src="js/mF_fancy.js"></script>
<link rel="stylesheet" type="text/css" href="css/mF_fancy.css"/>
<script type="text/javascript">
myFocus.set({
id:'picbox'
});
</script>
</head>
<body>
<div class="top">
<div class="top_content">
<ul>
<li><a href="#">联系方式</a></li>
<li><a href="#">加入收藏</a></li>
<li><a href="#">设为首页</a></li>
<li><a href="#">登录</a></li>
</ul>
</div>
</div>
<div class="mrap">
<div class="logo">
<div class="logo_left">
<img src="images/logo.jpg" title="慕课网">
</div>
<div class="logo_right">
<img src="images/tel.jpg" title="服务热线">24小时服务热线：<span class="tel">123-456-7890</span>
</div>
</div>
<div class="nav">

<div class="nav_mid">
<div class="mid_left">
<ul>
<li><a href="#">首页</a></li>
<li><a href="list.html">关于慕课</a></li>
<li><a href="list.html">新闻动态</a></li>
<li><a href="list.html">课程中心</a></li>
<li><a href="list.html">在线课程</a></li>
<li><a href="list.html">人才招聘</a></li>
</ul>
</div>
<div class="mid_right">
<form action="" method="post">
<input type="text" class="txt" />
</form>
</div>
</div>

</div>
<div class="ad" id="picbox">
<div class="loading"><img src="images/loading.gif" alt="图片加载中"/></div>
<div class="pic">
<ul>
<li><a href="#"><img src="images/ad2.jpg"/></a></li>
<li><a href="#"><img src="images/ad3.jpg"/></a></li>
<li><img src="images/ad4.jpg"/></li>
</ul>
</div>
</div>
<div class="main">
<div class="news"></div>
<div class="course"></div>
<div class="sidebar"></div>
</div>
</div>
</body>
</html>

0
李晓健

2015-11-11 09:42:40

帖完整代码

0