页面导航条实验

最新推荐文章于 2018-07-01 16:07:06 发布

原创最新推荐文章于 2018-07-01 16:07:06 发布 · 505 阅读

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本文详细介绍了HTML页面中使用无序列表实现导航栏，并通过CSS样式进行美化的过程，包括子菜单的显示与隐藏机制。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>mo ni test</title>
</head>
<link href="css/test.css" type="text/css" rel="stylesheet" />
<body>

<div class="menu" style="margin:0 auto;">
      <ul>
         <li class="u-l"><a href="#">item1</a>
                <ul>
                       <li><a href="#">item1-1</a></li>
                       <li><a href="#">item1-2</a></li>
                       <li><a href="#">item1-3</a></li>
                </ul>
         </li>
       <li class="u-l"><a href="#">item2</a>
                <ul>
                       <li><a href="#">item2-1</a></li>
                       <li><a href="#">item2-2</a></li>
                       <li><a href="#">item2-3</a></li>
                </ul>
       </li>
       <li class="u-l"><a href="#">item3</a>
                 <ul>
                       <li><a href="#">item3-1</a></li>
                       <li><a href="#">item3-2</a></li>
                       <li><a href="#">item3-3</a></li>
                </ul>
       </li>
       <li class="u-l"><a href="#">item4</a>
               <ul>
                       <li><a href="#">item4-1</a></li>
                       <li><a href="#">item4-2</a></li>
                </ul>
       </li>
      </ul>

</div>
<div id="main"></div>
</body>
</html>

==========================================test.css==========================================

body {
   background: #fff;
   font-family: "Lucida Grande", Helvetica, Arial, sans-serif;
   font-size: 12px;
}
/* style the outer div to give it width */
.menu {
   font-size:12px;
   width:700px;
   border: 1px solid blue;
   position: relative;
}
.menu ul
{
list-style: none;
margin: 0px;
padding: 0px;
overflow: hidden;
}
.menu ul .u-l
{   width: 120px;
   height: 30px;
   list-style: none;
   padding: 0px;
   text-align: center;
   float: left;
   border-right: 1px solid #CCCCCC;
   margin-right: 1px;
   background: url("../images/top_grad.gif") repeat scroll center center;
}
.menu ul ul li
{
   display: block;
   width: 150px;
   height: 20px;
   list-style: none;
   border-top: 1px solid #77AAAA;
   margin:1px;
   padding: 0px;
   text-align: center;
   background: url("../images/sub_grad.gif") repeat scroll center center;

}
.menu ul ul
{
   visibility: hidden;
   position: absolute;
   top:30px;
    z-index: 99;
}
.menu .u-l:hover ul
{
   visibility: visible;
}

#main
{
   width: 700px;
   height: 300px;
   background-color: red;
   margin:0px auto;

}