css三级下拉菜单实现方法分享

复制代码代码如下:
!DOCTYPE htML>
html>
head>
tITle> test/title>
style type = "text/css">
/*设置通配符样式*/
*{
margin:0;
padding:0;
}
body{
font-Size:12px;
}
ul{
list-style:none;
}
a{
text-decoration:none;
} /p> p> /*设置二级导航样式*/
.nav {
width:500px;
height:30px;
background-color:#b4b4b4;
/*导航栏居中*/
margin:auto;
}
.nav ul li {
width:100px;
height:30px;
float:left;
position:relative;
}
.nav ul li a {
display:block;
width:96px;
border:2px solid gray;
height:26px;
line-height:26px;
text-align:center;
}
.nav ul li a:hover {
background-color:yellow;
} /p> p> /*设置一级导航样式*/
.nav ul li ul{
display:none;
}
.nav ul li:hover ul{
display:block;
width:100px;
position:absolute;
top:30px;
left:0;
background-color:white;
}
.nav ul li:hover ul li a{
display:block;
width:96px;
height:26px;
line-height:26px;
border:2px solid gray;
text-align:center;
}
.nav ul li:hover ul li a:hover{
background-color:orange;
} /p> p> /*设置三级导航样式*/
.nav ul li:hover ul li ul {
display:none;
}
.nav ul li:hover ul li:hover ul{
display:block;
width:100px;
position:absolute;
top:0px;
left:100px;
background-color:#b4b4b4;
}
.nav ul li:hover ul li:hover ul li {
width:100px;
height:30px;
}
.nav ul li:hover ul li:hover ul li a {
display:block;
width:96px;
height:26px;
line-height:26px;
border:2px solid gray;
text-align:center;
}
.nav ul li:hover ul li:hover ul li a:hover {
background-color:#00CC00;
}
.nav ul li:hover ul .nav_jw ul {
display:none;
}
.nav ul li:hover ul .nav_jw:hover ul{
display:block;
width:100px;
position:absolute;
top:0px;
left:-100px;
background-color:#b4b4b4;
}
.nav ul li:hover ul .nav_jw:hover ul li {
width:100px;
height:30px;
}
.nav ul li:hover ul .nav_jw:hover ul li a {
display:block;
width:96px;
height:26px;
line-height:26px;
border:2px solid gray;
text-align:center;
}
.nav ul li:hover ul .nav_jw:hover ul li a:hover {
background-color:#00CC00;
} /p> p> /style>
/head>
body>
div class = "nav">
ul>
li> a href = "#"> 一级导航/a>
ul>
li> a href = "#"> 二级导航/a>
ul>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
/ul>
/li>
li> a href = "#"> 二级导航/a>
ul>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
/ul>
/li>
li> a href = "#"> 二级导航/a>
ul>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
/ul>
/li>
/ul>
/li>
li> a href = "#"> 一级导航/a>
ul>
li> a href = "#"> 二级导航/a> /li>
li> a href = "#"> 二级导航/a> /li>
li> a href = "#"> 二级导航/a> /li>
/ul>
/li>
li> a href = "#"> 一级导航/a>
ul>
li> a href = "#"> 二级导航/a> /li>
li> a href = "#"> 二级导航/a> /li>
li> a href = "#"> 二级导航/a> /li>
/ul>
/li>
li> a href = "#"> 一级导航/a>
ul>
li> a href = "#"> 二级导航/a> /li>
li> a href = "#"> 二级导航/a> /li>
li> a href = "#"> 二级导航/a> /li>
/ul>
/li>
li> a href = "#"> 一级导航/a>
ul>
li class="nav_jw"> a href = "#"> 二级导航/a>
ul>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
/ul>
/li>
li class="nav_jw"> a href = "#"> 二级导航/a>
ul>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
/ul>
/li>
li class="nav_jw"> a href = "#"> 二级导航/a>
ul>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
li> a href = "#"> 三级导航/a> /li>
/ul>
/li>
/ul>
/li>
/ul>
/div>
/body>
/html>

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