abstract：<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><
<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>
Correcting teacher：查无此人Correction time：2019-06-13 09:14:54
Teacher's summary：完成的不错。刚接触编程，理解起来比较辛苦。要坚持，继续加油。