.menu {//底层视图
font-family: arial, sans-serif;
width:750px;
margin:0;
margin:50px 0;
}
/* remove the bullets and set the margin and padding to zero for the unordered list */
.menu ul {
padding:0;
margin:0;
list-style-type: none;
}
/* float the list so that the items are in a line and their position relative so that the drop down list will appear in the right place underneath each list item */
.menu ul li {
float:left;
position:relative;
}
/* style the links to be 104px wide by 30px high with a top and right border 1px solid white. Set the background color and the font size. */
.menu ul li a, .menu ul li a:visited {
display:block;
text-align:center;
text-decoration:none;
width:104px;
height:30px;
color:#000;
border:1px solid #fff;
border-width:1px 1px 0 0;
background:#c9c9a7;
line-height:30px;
font-size:11px;
}
/* make the dropdown ul invisible */
.menu ul li ul {
display: none;
}
/* specific to non IE browsers */
/* set the background and foreground color of the main menu li on hover */
.menu ul li:hover a {
color:#fff;
background:#b3ab79;
}
/* make the sub menu ul visible and position it beneath the main menu list item */
.menu ul li:hover ul {
display:block;
position:absolute;
top:31px;
left:0;
width:105px;
}
/* style the background and foreground color of the submenu links */
.menu ul li:hover ul li a {
display:block;
background:#faeec7;
color:#000;
}
/* style the background and forground colors of the links on hover */
.menu ul li:hover ul li a:hover {
background:#dfc184;
color:#000;
}
</style>
</head>
<body>
<div class="menu">
<ul class=nav>
<li><a>第一页</a>
<ul>
<li><a>第一课</a>
<li><a>第二课</a>
<li><a>第三课</a>
</ul>
</li>
<li><a>第二页</a>
<ul>
<li><a>1</a>
<li><a>2</a>
<li><a>3</a>
</ul></li>
<li><a>第三页</a></li>
</ul>
</div>
自己动手写的菜单
<html>
<head>
<style>
* {//注意:这个初始化样式不设置的话,菜单样式有问题
margin:0;
padding:0;
}
ul {
list-style:none;
}
ul li {
/* position:relative;
left:0;*/
float:left;
width:100px;
height:30px;
line-height:30px;
}
ul li ul {
display:none;
}
ul li:hover ul{
display:block;
/*position:absolute;*/
left:0;
width:100px;
height:30px;
line-height:30px;
}
ul li:hover a {
color:red;
}
.clear {
clear:both;
}
</style>
</head>
<body>
<ul>
<li>
<a>第一页</a>
<ul>
<li>1</li>
<li>2</li>
</ul>
</li>
<li>
<a>第二页</a>
<ul>
<li>11</li>
<li>21</li>
</ul>
</li>
<li>
<a>第三页</a>
</li>
</ul>
</body>
</html>