外层一个DIV固定宽高,内层三个div 左浮动.(最后的元素清除过浮动).最后一步在中间的div里面加ul导航的时候发现 UL添加进div的时候不是默认的位置.
可是正常情况下UL添加进div里面应该是默认居左的呀
---------
代码如下:
html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>慕课网</title>
<link rel="stylesheet" type="text/css" href="css/index.css">
</head>
<body>
<!-- 页面头部 -->
<div>
<ul>
<li><a href="#">设为首页</a></li>
<li><a href="#">加入收藏</a></li>
<li><a href="#">联系我们</a></li>
</ul>
</div>
<!--页面外包装-->
<div>
<!-- logo -->
<div class="head clears">
<!-- logo左边部分 -->
<div>
<img src="images/logo.jpg">
</div>
<!-- logo右边部分 -->
<div class="logo_right clears">
<span></span>
<p>
24小时服务电话:
<span>132-1212-1212</span>
</p>
</div>
</div>
<!-- 导航 -->
<div class="nav clears">
<div></div>
<div>
<ul>
<li><a href="#">首页</a></li>
<li><a href="#">关于慕课</a></li>
<li><a href="#">新闻动态</a></li>
<li><a href="#">课程中心</a></li>
<li><a href="#">在线课程</a></li>
<li><a href="#">人才招聘</a></li>
</ul>
</div>
<div></div>
</div>
</div>
</body>
</html>
-------------------------------
css部分:
html, body{ margin:0; height:100%;background-color: #f5f5f5}
* {
padding: 0;
margin: 0;
font-size: 12px;
}
.top a
{
text-decoration:none;
color: black;
}
.clears:after{content:'';display:block;clear:both; line-height:0px; overflow:hidden; font-size:0px; height:0px;}
/**
* 控制顶部
*/
.top
{
height: 27px;
width: 100%;
background: url(../images/top_bg.jpg) repeat-x;
}
/**
* 控制顶部的li
*/
.top ul li
{
list-style: none;
list-style-image: url(../images/arrow.jpg);
float: left;
height: 27px;
width: 70px;
line-height:27px;/**字体垂直居中**/
}
/**
* 控制顶部的ul
*/
ul
{
float: right;
margin-right: 14%;
}
/**
* 页面主体外包装
*/
.wrap
{
width: 1000px;
margin: 0 auto;
}
.head
{
background-color:#FFFFFF;
}
/**
* 控制logo左边图片
*/
.logo_left
{
width: 200px;
height: 80px;
float: left;
}
.logo_right
{
width: 300px;/*可修改*/
height: 28px;
float: right;
margin-top: 30px;
}
.logo_tel
{
font-size: 20px;
color: black;
line-height: 28px;
color: #CC0000;
}
.telimage
{
width: 28px;
height: 28px;
display: block;
background: url(../images/tel.jpg) no-repeat;
background-position: 50% 50%;
float: left;
}
.logo_right p
{
float: left;
line-height: 28px;
height: 28px;
}
.nav
{
height: 40px;
width: 1000px;
}
.navl
{
background: url(../images/nav_left.jpg) no-repeat;
height: 40px;
width: 10px;
float: left;
}
.navr
{
background: url(../images/nav_right.jpg) no-repeat;
height: 40px;
width: 10px;
float: left;
}
.navc
{
background: url(../images/nav_bg.jpg) repeat-x;
width: 980px;
height: 40px;
float: left;
vertical-align:left;
}
.navc li
{
list-style: none;
float: left;
}
.navc a
{
color: #FFFFFF
ligin
}
.navc a:hover {color: #FFFF00} /* 鼠标悬停 */
.navc ul li
{
/* width: 100px; */
}
__李大炮