HTML 代码
<html lang="en">
<head>
<meta content="" name="">
<title></title>
<link rel="stylesheet" href="lesson3.css">
</head>
<!-- <style>
div{
width: 100;
height: 300;
background-color: blueviolet;
}
</style> -->
<body>
<form method="GET" action="">
username: <input style="color: dimgrey" type="text" name = "username" value="请输入用户名" onfocus="if(this.value=='请输入用户名'){this.value='';}" onblur="if(this.value==''){this.value='请输入用户名'}">
password: <input type="password" name="pwd">
<input type="submit">
</form>
<div>
</div style = "color: dimgrey"></div>
</div>
</body>
</html>
CSS 文件
div{
width: 100;
height: 100;
border-radius: 50%;
background-color: blueviolet;
}
死扣基础，循序渐进，成为成为大牛，形成自己的思维模式
