纯html5+css3下拉导航菜单实现代码_HTML5教程

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推荐：html5+css3实现一款注册表单实例
注册表单采用html5+css3布局实现，效果相当不错，感兴趣的前端web设计者可以参考下哈，希望可以帮助到你

效果图如下：

代码如下：

复制代码代码如下:www.mb5u.com

<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8" />
<title>纯html+css 导航</title>



<style>
*{
margin:0;
padding:0;
}
.clear:after {
clear: both;
content: ".";
display: block;
height: 0;
visibility: hidden;
}
nav{
display:inline-block;
border:1px solid #505255;
border-bottom: 1px solid #282C2F;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
margin:50px;
-webkit-box-shadow:1px 1px 3px #292929;
-moz-box-shadow:1px 1px 3px #292929;
}
li{
list-style:none;
float:left;
border-right: 1px solid #2E3235;
position: relative;
/*background: -moz-linear-gradient(top, #fff, #555D5F 2% ,#555D5F 50%,#3E4245 100%);
background: -webkit-gradient(linear, 0 0, 0 100%, from(#fff), color-stop(2%, #555D5F), color-stop(50%, #555D5F),to(#3E4245));*/
background:#555D5F;
}
li:hover{
/*background: -moz-linear-gradient(top, #fff, #3E4245 2% ,#555D5F 80%,#555D5F 100%);
background: -webkit-gradient(linear, 0 0, 0 100%, from(#fff), color-stop(2%, #3E4245), color-stop(80%, #3E4245),to(#555D5F));*/
background:#3E4245;
-moz-transition: background 1s ease-out;
-webkit-transition: background 1s ease-out;
}
li a{
display:block;
height:40px;
line-height:40px;
padding:0 30px;
font-size:12px;
color:#fff;
text-shadow: 0px -1px 0px #000;
text-decoration:none;
white-space:nowrap;
border-left: 1px solid #999E9F;
border-top: 1px solid #999E9F;
-moz-border-top-left-radius: 2px;
-webkit-border-top-left-radius: 2px;
z-index:100;
}
li > a{
position:relative;
}
li.first a{
-moz-border-radius-topleft: 4px;
-moz-border-radius-bottomleft: 4px;
-webkit-border-top-left-radius: 4px;
-webkit-border-bottom-left-radius: 4px;
}
li.last{
border-right: 0 none;
}
dl{
position:absolute;
display:block;
top:40px;
left: -25px;
width:165px;
background:#222222;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
-webkit-box-shadow:1px 1px 3px #292929;
-moz-box-shadow:1px 1px 3px #292929;
z-index:10;
}
li:hover dl{
top:50px;
display:block;
width:145px;
padding:10px;
}
dl a{
background:transparent;
border:0 none;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
-moz-transition: background 0.5s ease-out;
-webkit-transition: background 0.5s ease-out;
z-index:50;
}
dl a:hover{
color:#FFF;
background:#999E9F;
-moz-transition: background 0.3s ease-in-out, color 0.3s ease-in-out;
-webkit-transition: background 0.3s ease-in-out, color 0.3s ease-in-out;
}
dd{
margin-top:-40px;
opacity:0;
width:145px;
-webkit-transition-property:all;
/*-webkit-transition-timing-function: cubic-bezier(5,0,5,0);*/
-moz-transition-property: all;
/*-moz-transition-timing-function: cubic-bezier(5,0,5,0);*/
/*-webkit-transition-delay:5s;
-moz-transition-delay:5s;*/
}
li:hover dd{
margin-top:0;
opacity:1;
}
li dd:nth-child(1){
-webkit-transition-duration: 0.1s;
-moz-transition-duration: 0.1s;
}
li dd:nth-child(2){
-webkit-transition-duration: 0.2s;
-moz-transition-duration: 0.2s;
}
li dd:nth-child(3){
-webkit-transition-duration: 0.3s;
-moz-transition-duration: 0.3s;
}
li dd:nth-child(4){
-webkit-transition-duration: 0.4s;
-moz-transition-duration: 0.4s;
}
dt{
display:none;
margin-top:-25px;
padding-top:15px;
height:10px;
}
li:hover dt{
display:block;
}
.Darrow{
float:right;
margin:18px 10px 0 0;
border-width:5px;
border-color:#FFF transparent transparent transparent;
border-style:solid;
width:0;
height:0;
line-height:0;
overflow:hidden;
cursor:pointer;
text-shadow: 0px -1px 0px #000;
-webkit-box-shadow:0px -1px 0px #000;
-moz-box-shadow:0px -1px 0px #000;
}
.arrow{
margin:0 auto;
margin-top:-5px;
display:block;
width:10px;
height:10px;
background:#222222;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
}
</style>
</head>
<body>
<nav>
<ul class="clear">
<li class="first"><a href="#">菜单一</a></li>
<li>
<span class="Darrow"></span>
<a href="#">菜单二</a>
<dl>
<dt><span class="arrow"></span></dt>
<dd><a href="#">子菜单一</a></dd>
<dd><a href="#">子菜单二</a></dd>
<dd><a href="#">子菜单三子菜单三</a></dd>
</dl>
</li>
<li>
<span class="Darrow"></span>
<a href="#">菜单三</a>
<dl>
<dt><span class="arrow"></span></dt>
<dd><a href="#">子菜单一</a></dd>
<dd><a href="#">子菜单二</a></dd>
<dd><a href="#">子菜单三子菜单三</a></dd>
</dl>
</li>
<li>
<span class="Darrow"></span>
<a href="#">菜单四</a>
<dl>
<dt><span class="arrow"></span></dt>
<dd><a href="#">子菜单一</a></dd>
<dd><a href="#">子菜单二</a></dd>
<dd><a href="#">子菜单三</a></dd>
<dd><a href="#">子菜单四</a></dd>
</dl>
</li>
<li><a href="#">菜单五</a></li>
<li><a href="#">菜单六</a></li>
<li><a href="#">菜单七</a></li>
<li class="last"><a href="#">菜单八</a></li>
</ul>
</nav>
</body>
</html>

分享：HTML5之HTML元素扩展(上)—新增加的元素及使用概述
HTML5中加入了全新的结构型元素，例如页眉header，页脚footer，导航nav，内容article，章节section等除了这种整个页面的结构型元素，html5也加入了块级别的语义元素,感兴趣的朋友可以了解下，或许对你有所帮助

来源：未知/所属分类：HTML5教程/更新时间：2013-04-22

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