console 命令行工具 X clear

console

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Xin 科技网</title>
</head>
<body>
	<div id="all">
		<h2>欢迎来到 Xin 科技网</h2>
		<div id="Navigation">
			<ul></ul>
			
		</div>
	
	</div>
</body>
</html>

body{padding:0;margin:0}
#all{width:1000px;height:1000px;margin:0 auto;font: 14px "微软雅黑", Arial, Helvetica, sans-serif; background: url("http://www.yangqq.com/skin/2017/images/top.jpg") no-repeat;text-align:center; color:red}