DIV中的内容 怎么让其垂直居中?????
<!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 " lang= "gb2312 " xml:lang= "gb2312 ">
<head>
<title> Down CSS </title>
<meta http-equiv= "Content-Type " content= "text/html; charset=gb2312 " />
<script type= "text/javascript " src= "chrome.js ">
</script>
<style type= "text/css ">
<!--
.chromestyle {width:760px; background-color:#165AB3; /*font-weight:bold;*/}
.chromestyle ul li { display:inline;} <!--让LI没有黑点横向排列-->
.chromestyle ul li a {
color:#494949;
padding:4px 7px;
margin:0;
text-decoration:none;
border-right:1px solid #DADADA;
}
.chromestyle ul li a[rel]:after{
content: "v ";
}
.chromestyle:after{
content: ". ";
display:block;
height:0;
clear:both;
visibility:hidden;
}
.dropmenudiv {
position:absolute;
top:0;
border:1px solid #165AB3; /*边框*/
border-bottom-width:0;
font:normal 12px Verdana;
line-height:18px;
z-index:100;
background-color:#5293d1;
width:100px;
visibility:hidden;
filter:progid:DXImageTransform.Microsoft.Shadow(color=#CACACA,direction=135,strength=4);
}
.dropmenudiv a{
width:auto;
display:block;
text-align:3x;
padding:2px 0;
border-bottom:1px solid #165AB3;/*设置对象下边框的样式*/
text-decoration:none;
font-weight:bold;
color:#FFFFFF;
}
* html .dropmenudiv a{
width:100%;
}
.dropmenudiv a:hover
{
background-color:#1d7fdb;
}
body {
font-size: 12px;
text-decoration: none;
margin: 0px;
text-align:center;
}
a:link {
color: #FFFFFF;
text-decoration: none;
}
a:visited {
color: #FFFFFF;
text-decoration: none;
}
a:hover {
text-decoration: none;
color:#FFFF00
}
a:active {
color: #FFFFFF;
text-decoration: none;
}
a.hidden {
color: #FFFFFF;
}
-->
</style>
</head>
<body>
<!-- 主菜单 -->
<div id= "chromemenu " class= "chromestyle ">
<ul>
<li> <a href= "# "> 首页 | </a> </li>
<li> <a href= "# " rel= "dropmenu1 "> 新闻中心 | </a> </li>
<li> <a href= "# " rel= "dropmenu2 "> 产品方案 | </a> </li>
<li> <a href= "# " rel= "dropmenu3 "> 服务支持 | </a> </li>
<li> <a href= "# " rel= "dropm