console 命令行工具 X clear

console

<html>

<head>
	<style>
		.box::before {
			content:'';
            display:block;
            height:1px;
            background-color:red;
            transform:scale(0.8);
            width:1px;
           
		}
	</style>
<head>
	<body>
		<div class="box">qqqqqqqqqqqqq</div>
	<body>
</html>