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console 命令行工具 X clear

                    
>
console
<!DOCTYPE html>
<html>
<head>
<style> 
div
{
width:300px;
height:100px;
background-color:#ff9900;
-moz-box-shadow: 10px 10px 5px #888888; /* 老的 Firefox */
box-shadow: 10px 10px 5px #888888;
}
</style>
</head>
<body>

<div></div>

</body>
</html>