css浮动的元素居中

<!DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>页面浮动元素的水平居中</title>

<style type="text/css">

.clearfix:after { content:""; height:0; visibility:hidden; display:block; clear:both; }

.clearfix { zoom:1; }

.wrap { margin:20px auto; padding:10px 0; background:orange; overflow:hidden; position:relative; }

.inwrap{ float:left; position:relative; left:50%;}

.page { float:left; position:relative; left:-50%; }

.page li { float:left;margin:0 5px; }

.page li a { display:block; padding:2px 9px; background:white; border:1px solid red; float:left;}

</style>

</head>

<body>

<div class="wrap clearfix">

<div class="inwrap">

<ul class="page">

<li> <a href="#">上一页</a> </li>

<li> <a href="#">1</a> </li>

<li> <a href="#">2</a> </li>

<li> <a href="#">3</a> </li>

<li> <a href="#">4</a> </li>

<li> <a href="#">2</a> </li>

<li> <a href="#">3</a> </li>

<li> <a href="#">2</a> </li>

<li> <a href="#">3</a> </li>

<li> <a href="#">4</a> </li>

<li> <a href="#">5</a> </li>

<li> <a href="#">6</a> </li>

<li> <a href="#">下一页</a> </li>

</ul>

</div>

</body>

</html>

父元素和子元素同时左浮动，然后父元素相对左移动50%，再然后子元素相对左移动-50%。

巴特西