简单的css下拉菜单

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>CSS下拉菜单</title>
<style>
#container
{
position
:relative;
width
:900px;
height
:30px;
padding
:0px;
margin
:0px;
border
:0px;
}
#nav
{
/*background-color:white;*/
font-size
:12px;
font-family
:Arial, Helvetica, sans-serif;
margin
:0px;
padding
:0px;
color
:white;
height
:30px;
border
:0px;
position
:absolute;
top
:0px;
z-index
:1;
}
#nav ul,li
{
margin
:0px;
padding
:0px;
}
#nav li
{
display
:inline;
list-style
:none;
list-style-position
:outside;
text-align
:center;
font-weight
:bold;
float
:left;
}
#nav a:link
{
color
:#336601;
text-decoration
:none;
float
:left;
width
:100px;
padding
:3px 5px 0px 5px;
}
#nav a:visited
{
color
:#336601;
text-decoration
:none;
float
:left;
padding
:3px 5px 0px 5px;
width
:100px;
}
#nav a:hover
{
color
:white;
float
:left;
padding
:3px 3px 0px 20px;
width
:88px;
text-decoration
:none;
background-color
:#539D26;
}
#nav a:active
{
color
:white;
float
:left;
padding
:3px 3px 0px 20px;
width
:88px;
text-decoration
:none;
background-color
:#BD06B4;
}
#nav .list
{
line-height
:20px;
text-align
:left;
padding
:4px;
font-weight
:normal;
}
#nav .menu1
{
width
:120px;
height
:auto;
margin
:6px 4px 0px 0px;
border
:1px solid #9CDD75;
background-color
:#F1FBEC;
color
:#336601;
padding
:6px 0px 0px 0px;
cursor
:hand;
overflow-y
:hidden;
/**filter:Alpha(opacity=70);
-moz-opacity:0.7;*
*/
}
#nav .menu2
{
width
:120px;
height
:18px;
margin
:6px 4px 0px 0px;
background-color
:#F5F5F5;
color
:#999999;
border
:1px solid #EEE8DD;
padding
:6px 0px 0px 0px;
overflow-y
:hidden;
cursor
:hand;
}
</style>
</head>

<body>
asdfasdfa
<table>
<tr>
<td>
adfsdf
<div id="container">
<div id="nav">
<ul>
<li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">我的首页
<div class="list">
<a href="#">我爱CSS</a><br />
<a href="#">我的首页</a><br />
<a href="#">我的日志</a><br />
<a href="#">我的日志</a><br />
<a href="#">我的相册</a><br />
<a href="#">我的收藏</a><br />
</div>
</li>
<li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">社区圈子
<div class="list">
<a href="#">我爱CSS</a><br />
<a href="#">我的首页</a><br />
<a href="#">我的日志</a><br />
<a href="#">我的相册</a><br />
<a href="#">我的收藏</a><br />
</div>
</li>
<li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">我的短信
<div class="list">
<a href="#">我爱CSS</a><br />
<a href="#">我的相册</a><br />
<a href="#">我的收藏</a><br />
</div>
</li>
<li class="menu2" onMouseOver="this.className='menu1'" onMouseOut="this.className='menu2'">账户管理
<div class="list">
<a href="#">我爱CSS</a><br />
<a href="#">我的首页</a><br />
<a href="#">我的日志</a><br />
<a href="#">我的相册</a><br />
<a href="#">我的收藏</a><br />
<a href="#">我的日志</a><br />
<a href="#">我的相册</a><br />
<a href="#">我的收藏</a><br />
</div>
</li>
</ul>
</div>
</div>
</td>
</tr>
<tr>
<td>

<div>abadfasdfsadfsdf
asdfasdfas
<br>
asdfasdf
<br>
asdf
<br>
asdf
asdf
asd
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<br>
asdf
sdf
sadf
</div>

</td>
</tr>
</table>




</body>
</html>
原文地址:https://www.cnblogs.com/poissonnotes/p/2055649.html