<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>QQ登录</title>
<link rel="stylesheet" href="css/a.css" />
</head>
<body>
<div class="one">
<p>
<form method="get">
用户名 <input type="text" size="15"><br />
<br /> 密码
<input type="text" size="15"><br /><br />
<input type="submit" value="登录">
</form>
</p>
</div>
</body>
</html>
a.css文件
.one{
width: 370px;
height: 280px;
margin-left: 621px;
margin-top: 310px;
margin-right: 540px;
border: 2px solid black;
padding-top:100px ;
padding-left: 80px;
background-image: url(a.jpg);
background-position: center;
background-repeat: no-repeat;
background-size: 500px 500px;
}
