成果：
代码：
HTML
html"><!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>太阳照常升起</title><link rel="stylesheet" href="./css/style.css">
</head>
<body><div class="box"></div>
</body>
</html>
CSS
css">.box{margin: 100px 0 0 500px;background: red;width: 100px;height: 100px;border-radius: 50px 50px 50px 50px;box-shadow: #ff5000 10px 10px 80px;
}
