背景图片居中显示三种方法

1.

    <div style="width:800px;height:600px;background:url(http://www.zzsky.cn/images/logo.gif) no-repeat 250px 270px;border:1px solid #cccccc;"></div>

 

2.

    <div style="width:800px;height:600px;background:url(http://www.zzsky.cn/images/logo.gif) no-repeat 50% 50%;border:1px solid #cccccc;"></div>

3.

    <div style="width:800px;height:600px;background:url(http://www.zzsky.cn/images/logo.gif) no-repeat center center;border:1px solid #cccccc;"></div>