<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>不定寬塊狀元素水平居中</title>
<style>
.container{
??? float:left;
position:relative;
left:50%
}
.container ul{
list-style:none;
margin:0;
padding:0;
position:relative;
left:-50%;
}
.container li{float:left;display:inline;margin-right:8px;}
/*下面是代碼任務(wù)區(qū)*/
.wrap{
???? float:left;
????
???? position:relative;
???? left:50%
}
.wrap-center{
??? background:#ccc;
??? position:relative;
??? left:-50%;
??
}
</style>
</head>
<body>
<div class="container">
<ul>
??? <li><a href="#">1</a></li>
??????? <li><a href="#">2</a></li>
??????? <li><a href="#">3</a></li>
??? </ul>
</div>
<!--下面是代碼任務(wù)區(qū)-->
<div class="wrap">
??? <div class="wrap-center">我們來(lái)學(xué)習(xí)一下這種方法.</div>
</div>
</body>
</html>
整了好久，總是不能完全居中。。
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