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多个CSS风格共用同一(背景)图片

作者:anotherbug 日期:2007-05-31 21:50:55

字体大小: 小 中 大
附件
wel_2.gif(11.1 K)
 
切换到幻灯片模式

拿网易的邮箱来说，邮箱里用到的图标几乎在附件这张gif图里

看css

/*Wel 积分*/
.Wel_rl,.Wel_rl_0,.w_jf_bg,b.jf_0,b.jf_1,b.jf_2,b.jf_3,b.jf_4,b.jf_5,b.jf_6,.if4_sev_Main,.if4Ico,.wel_Ma460x110img,.wel_Mtab_head,.wel_Mt_1,.Wel_rl,.Wel_rl_0
{ background-image:url(http://p.mail.163.com/js31style/lib/0703131650/163blue/wel_2.gif); background-repeat:no-repeat}

以上所有风格都用到这张图片

其中的一个风格的设置为： 
1
.wel_Mtab_head{width:460px;height:30px;background-position:-10px -38px}


从wel_2.gif这张图的 10 38 坐标开始，宽460,高30的区域为这个风格所用。


这种做法的最大优点：

多个图标存放于一个gif中，用户打开页面时，所有图标只请求一次，对图片服务器压力大大减少，且对用户来说感觉速度加快。

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