為什么第二個雪碧圖效果出不來呢？
<!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">
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=utf-8"?/>
<title>無標(biāo)題文檔</title>
<style>
*{
????margin:0;padding:0;
????}
.box{
????width:190px;
????height:250px;
????background-color:#BBFFEE;
????padding:0?20px;
????font-size:14px;
}
.cont{
????width:190px;
????height:30px;
????margin:8px?auto;
????text-indent:30px;
????color:#AAAAAA;
????border:1px?solid?#acc3e3;
????border-radius:3px;
}????
p?{
???margin-top:5px;
???font-family:"微軟雅黑";
}????
p?input{
????margin-right:5px;
}
p?a{
????float:right;
????text-decoration:none;
}
.cont-2,.cont-3{
????width:100%;
????height:38px;
????margin:12px?auto;
}
.cont-2{
????background:url(http://img1.sycdn.imooc.com//539a972b00013e9102280177.jpg)?no-repeat;
}
.cont-3{
????background:url(http://img1.sycdn.imooc.com//539a972b00013e9102280177.jpg)?0?-38;
}
</style>
</head>
<body>
<div?class="box">
????<form>
????????<input?class="cont"?type="text"?value="郵箱/手機(jī)號/用戶名"/>
????????<input?class="cont"?type="text"?value="請輸入密碼"/>
????????<p>
????????????<input?type="checkbox"?/>下次自動登錄
????????????<a?href="#">忘記密碼？</a>
????????</p>
????????<input?class="cont-2"type="button"/>
????????<hr>
????????<input?class="cont-3"?type="button"/>
????</form>
????
</div>
</body>
</html>不知道是哪里錯了？
2015-12-07
.cont-3{
????background:url(http://img1.sycdn.imooc.com//539a972b00013e9102280177.jpg)?0?-38;
}
這里的-38要加上px
2015-12-06
.cont-3?{ ????background:?url(http://img1.sycdn.imooc.com//539a972b00013e9102280177.jpg)?no-repeat; ????background-position:?0?-38px; }這樣試一下