trycss_cen_8 在线代码实例

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<!DOCTYPE html>
<html>
<meta charset="utf-8">
<title>编程狮(w3cschool.cn)</title>
<style>
    .Absolute-Center {
      width: 50%;
      height: 50%;
      overflow: auto;
      margin: auto;
      position: absolute;
      top: 0; left: 0; bottom: 0; right: 0;
    }
</style>
<body>
    <div class="Absolute-Center">你好 w3cschool</div>
</body>
 
 
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运行结果
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