console 命令行工具 X clear
console
<!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>
	<form action="index.html" method="post" name="form1">
        请做自我介绍： <br>
     <textarea name="textarea" cols="20" rows="3" placeholder="请在此处介绍自已。。。"></textarea>
    </form>
</body>
</html>