CSS3实现的横向二级下拉菜单代码实例_html/css

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CSS3实现的横向二级下拉菜单代码实例_html/css_WEB-ITnose

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Jun 24, 2016 am 11:31 AM

CSS3实现的横向二级下拉菜单代码实例:
横向二级下拉菜单是非常常用的效果，例如很多网站的导航栏就是这样的二级下拉菜单效果，非常好用，本章节分享一段使用CSS3实现的下拉菜单，当然当下很多浏览器都不支持，不过相信用不了多久这种现状就会被改变。
代码实例如下:

<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="author" content="http://www.softwhy.com/" /><title>蚂蚁部落</title><style type="text/css">#nav{  float:left;  font:bold 12px Arial, Helvetica, Sans-serif;  border:1px solid #121314;  border-top:1px solid #2b2e30;  -webkit-border-radius:5px;  -moz-border-radius:5px;  border-radius:5px;  overflow:hidden;}#nav ul{  margin:0;  padding:0;  list-style:none;}#nav ul li{float:left;}#nav ul li a{  float:left;  color:#d4d4d4;  padding:10px 20px;  text-decoration:none;  background:#3C4042;  background:-webkit-gradient( linear, left bottom, left top, color-stop(0.09, rgb(59,63,65)), color-stop(0.55, rgb(72,76,77)), color-stop(0.78, rgb(75,77,77)) );  background:-moz-linear-gradient( center bottom, rgb(59,63,65) 9%, rgb(72,76,77) 55%, rgb(75,77,77) 78% );  background:-o-linear-gradient( center bottom, rgb(59,63,65) 9%, rgb(72,76,77) 55%, rgb(75,77,77) 78% );  box-shadow:0 1px 0 rgba(255, 255, 255, 0.1) inset, 0 0 5px rgba(0, 0, 0, 0.1) inset;  border-left:1px solid rgba(255, 255, 255, 0.05);  border-right:1px solid rgba(0, 0, 0, 0.2);  text-shadow:0 -1px 1px rgba(0, 0, 0, 0.6);}#nav ul li a:hover, #nav ul li:hover > a{  color:#252525;  background:#3C4042;  background:-webkit-gradient( linear, left bottom, left top, color-stop(0.09, rgb(77,79,79)), color-stop(0.55, rgb(67,70,71)), color-stop(0.78, rgb(69,70,71)) );  background:-moz-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );  background:-o-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );  text-shadow:0 1px 0 rgba(255, 255, 255, 0.2), 0 -1px #000;}#nav li ul a:hover, #nav ul li li:hover > a{  color:#2c2c2c;  background:#5C9ACD;  background:-webkit-gradient( linear, left bottom, left top, color-stop(0.17, rgb(61,111,177)), color-stop(0.51, rgb(80,136,199)), color-stop(1, rgb(92,154,205)) );  background:-moz-linear-gradient( center bottom, rgb(61,111,177) 17%, rgb(80,136,199) 51%, rgb(92,154,205) 100% );  background:-o-linear-gradient( center bottom, rgb(61,111,177) 17%, rgb(80,136,199) 51%, rgb(92,154,205) 100% );  border-bottom:1px solid rgba(0, 0, 0, 0.6);  border-top:1px solid #7BAED9;  text-shadow:0 1px rgba(255, 255, 255, 0.3);}#nav li ul {  background:#3C4042;  background-image:-webkit-gradient( linear, left bottom, left top, color-stop(0.09, rgb(77,79,79)), color-stop(0.55, rgb(67,70,71)), color-stop(0.78, rgb(69,70,71)) );  background-image:-moz-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );  background-image:-o-linear-gradient( center bottom, rgb(77,79,79) 9%, rgb(67,70,71) 55%, rgb(69,70,71) 78% );  border-radius:0 0 10px 10px;  -moz-border-radius:0 0 10px 10px;  -webkit-border-radius:0 0 10px 10px;  left:-999em;  margin:35px 0 0;  position:absolute;  width:160px;  z-index:9999;  box-shadow:0 0 15px rgba(0, 0, 0, 0.4) inset;  -moz-box-shadow:0 0 15px rgba(0, 0, 0, 0.4) inset;  -webkit-box-shadow:0 0 15px rgba(0, 0, 0, 0.4) inset;  border:1px solid rgba(0, 0, 0, 0.5);}#nav li:hover ul{left: auto;}#nav li ul a{  background: none;  border: 0 none;  margin-right: 0;  width: 120px;  box-shadow: none;  -moz-box-shadow: none;  -webkit-box-shadow: none;  border-bottom: 1px solid transparent;  border-top: 1px solid transparent;}#nav li li ul{  margin: -1px 0 0 160px;  -webkit-border-radius: 0 10px 10px 10px;  -moz-border-radius: 0 10px 10px 10px;  border-radius: 0 10px 10px 10px;  visibility:hidden;}#nav li li:hover ul{visibility:visible;}#nav ul ul li:last-child > a{  -moz-border-radius:0 0 10px 10px;  -webkit-border-radius:0 0 10px 10px;  border-radius:0 0 10px 10px;}#nav ul ul ul li:first-child > a{  -moz-border-radius:0 10px 0 0;  -webkit-border-radius:0 10px 0 0;  border-radius:0 10px 0 0;}</style></head><body><div style="margin: 0pt auto; width: 740px;">  <div id="nav">    <ul>      <li><a href="#">网站首页</a></li>      <li><a href="#">关于我们</a></li>      <li><a href="#">CSS3作品</a></li>      <li><a href="#">下拉菜单</a>        <ul>          <li><a href="#">ASP</a></li>          <li><a href="#">PHP</a></li>          <li><a href="#">JSP</a></li>        </ul>      </li>      <li><a href="#">三级下拉</a>        <ul>          <li><a href="#">AJAX</a></li>          <li><a href="#">EXTJS</a></li>          <li><a href="#">脚本资源</a>            <ul>              <li><a href="#">Javascript</a></li>              <li><a href="#">jquery</a></li>              <li><a href="#">prototype</a></li>              <li><a href="#">Mooltoos</a></li>            </ul>          </li>          <li><a href="#">HTML5</a></li>          <li><a href="#">Chrome</a></li>        </ul>      </li>      <li><a href="#">服务</a></li>      <li><a href="#">联系我们</a></li>    </ul>  </div></div><br><br></body></html>

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