CSS 文字替代图片下载失败情况
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" > <head><title>Text Replacement</title> <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> <link rel="stylesheet" href="site.css" media="all" type="text/css" /> <link rel="stylesheet" href="page.css" media="all" type="text/css" /> </head> <body> <h1>Text Replacement</h1> <h2 id="h2" >Heading ddd2<span></span></h2> </body></html>
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CSS:
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#h2 {
??? position: relative;
??? width: 250px;
??? height: 76px;
??? overflow: hidden;
}
/*
?* span里面的图片和h2中字的长宽一样，如果当图片显示不出来时候，自然就是字来充当
?*/
#h2 span {
??? position: absolute;
??? width: 250px;
??? height: 76px;
??? left: 0;
??? top: 0;
??? background: url("heading2.jpg") no-repeat;
}
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