console 命令行工具 X clear

console

// alert(5454);

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=, initial-scale=">
	<meta http-equiv="X-UA-Compatible" content="">
	<title></title>
</head>
<body>
	<!-- <div style="charset ">
5555
    </div> -->
<div style="charset "></div>

</body>
</html>

*{
    width: 980px;
    height: 220px;
    
}