abstract：<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <link rel="icon" type="imag
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="icon" type="image/x-icon" href="">
<title>css边框样式</title>
<style type="text/css">
.box1{width: 200px;height: 200px;border: 1px solid #000;}
.box2{width: 200px;height: 200px;border: 1px solid #ccc;background: red;border-radius: 50%;}
button{width: 100px;height: 30px;line-height: center; border: none;}
.box3{width: 200px;height: 200px;background: green; box-shadow: 10px -10px 5px #ccc;}
</style>
</head>
<body>
<div class="box1"></div>
<hr>
<div class="box2"></div>
<hr>
<button>登录/注册</button>
<hr>
<div class="box3"></div>
</body>
</html>
Correcting teacher：西门大官人Correction time：2019-04-02 10:46:59
Teacher's summary：作业写的不错，最好上传一下程序的运行效果图