实例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>用绝对定位制作登录页</title>
<style>
div{
width: 300px;
height: 150px;
background-color: pink;
position: absolute;
left:50%;
top: 50%;
margin-top:-150px ;
margin-left: -150px;
}
</style>
</head>
<body>
<h1>用绝对定位制作登录页</h1>
<div>
<form action="" name="post">
<p>
<label for="username">用户：</label>
<input type="text" id="username" name="username">
</p>
<p>
<label for="password">密码：</label>
<input type="password" id="password" name="password">
</p>
<p>
<button>登录</button>
</p>
</form>
</div>
</body>
</html>运行实例 »
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