abstract：<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title>html</title></head><body> <div style="width: 100px; height: 100px; backgroun
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>html</title>
</head>
<body>
<div style="width: 100px; height: 100px; background-color: red;">这是一个盒子</div>
</body>
</html>
Correcting teacher：查无此人Correction time：2019-04-25 13:24:27
Teacher's summary：完成的不错，刚接触编程，比较辛苦。要坚持，继续加油。