日期:2014-05-17 浏览次数:20757 次
<style>
html,body{ margin: 0; padding: 0; height: 100%; }
body{ position: relative; }
.msg{ position: absolute; left: 50%; top: 50%; width: 400px; height: 400px; margin: -200px 0 0 -200px; }
.msg img{ display: block; }
</style>