第一课,网页demo
<html>
<head>
<meta charset="utf-8">
<title>第一课,网页demo</title>
</head>
<body>
<div style="background='red' ">你好,老师</div>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>第一课,网页demo</title>
</head>
<body>
<div style="background='red' ">你好,老师</div>
</body>
</html>
