abstract：<!DOCTYPE html><html><head> <mate="utf-8"> <title>CSS盒子</title> <style type="text/css">.box{width: 100px;height: 100px;border: 1px solid #
<!DOCTYPE html>
<html>
<head>
<mate="utf-8">
<title>CSS盒子</title>
<style type="text/css">
.box{width: 100px;height: 100px;border: 1px solid #ccc;}
</style>
</head>
<body>
<div></div>
<div class="box"></div>
</body>
</html>
Correcting teacher：滅絕師太Correction time：2018-11-06 09:14:38
Teacher's summary：目前的課程內(nèi)容比較簡單，可以不寫總結(jié)之后的課程不可以這樣哦