<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>test</title>
<script type="text/javascript">
function a(){
function b(){
return 6;
}
alert(b);
alert(5)
}
</script>
<style type="text/css">
div{
height:100px;
width:100px;
}
.shadow{
-moz-box-shadow: 3px 3px 4px #000;
-webkit-box-shadow: 3px 3px 4px #000;
box-shadow: 3px 3px 4px #000;
/* For IE 8 */
-ms-filter: "progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#000000')";
/* For IE 5.5 - 7 */
filter: progid:DXImageTransform.Microsoft.Shadow(Strength=4, Direction=135, Color='#000000');
}
.radius{
border-radius:25px;
-moz-border-radius:25px; /* 老的 Firefox */
-webkit-border-radius:25px;
}
</style>
</head>
<body>
<button type="button radius" οnclick="a()">click</button>
<div class="shadow radius"></div>
</body>
</html>
![【CSS3】Flex布局詳解[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)