z-index的问题，效果出现不了
想让红色的层到 白色的层下面
然后用了，z-index没有效果。。。。不知道怎么了？
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<!--<link rel="stylesheet" href="css/normalize.css">-->
<style type="text/css">
*{
margin: 0;
padding:0;
}
.graph{
/* z-index: 99;*/
width: 1000px;
height: 300px;
margin: 100px auto;
text-align: center;
/*font-size:24px;*/
}
.effect{
position:relative;
box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0px 0px 20px rgba(0,0,0,0.1) inset;
-webkit-box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0px 0px 20px rgba(0,0,0,0.1) inset;
-moz-box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0px 0px 20px rgba(0,0,0,0.1) inset;
-ms-box-shadow: 0px 1px 4px rgba(0,0,0,0.3),0px 0px 20px rgba(0,0,0,0.1) inset;
}
.effect:after{
content:'';
position:absolute;
left:53px;
top: 50%;
width: 90%;
height: 50%;
z-index: -1;
background:#f00;
border-radius: 100px/10px;
box-shadow:0px 1px 20px rgba(0,0,0,0.8);
-webkit-box-shadow:0px 1px 20px rgba(0,0,0,0.8);
-moz-box-shadow:0px 1px 20px rgba(0,0,0,0.8);
-ms-box-shadow:0px 1px 20px rgba(0,0,0,0.8);
}
</style>
<body>
<div class="graph effect">
<h1>曲线阴影</h1>
</div>
</body>
</html>
qq_小盛开_01回答
-
慕数据5775487
你两个类名都是同一个DIV怎么会出效果。
随时随地看视频慕课网APP
相关分类
CSS3