<!DOCTYPE html>
<html>
<head>
<title>css背景图定位</title>
<meta http-equiv="content-type" content="utf-8"/>
<style>
div{34px;height:34px;border:solid 1px}
#n1{background-image:url(bg_1.png);background-repeat:no-repeat;background-position:-35px -6px;}
#n2{background-image:url(bg_1.png);background-repeat:no-repeat;background-position:34% 80%;}
#n3{background-image:url(bg_1.png);background-repeat:no-repeat;background-position:center center;}
</style>
</head>
<body>
<div id="n1">
</div>
<div id="n2">
</div>
<div id="n3">
</div>
</body>
</html>
<style>
div{widht:34px;height:34px;}
</style>
background-image:url(bg_1.png);
background-repeat:no-repeat;