在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>菜鸟教程(cainiaoplay.com)</title>
<style>div {
    width: 300px;
    height: 100px;
    padding: 15px;
    background-color: yellow;
    box-shadow: 10px 10px 5px grey;
}
</style>
</head>
<body>

<div>This is a div element with a box-shadow</div>

</body>
</html>

源代码

动行结果