<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Fieldset</title>
</head>
<body>
<form action="#">
<fieldset>
<legend>用户登录</legend> <!--分组标题-->
姓名:<input type="text" name="userName" id="userName" />
<br />
密码:<input type="password" name="pwd" id="pwd" />
</fieldset>
</form>
</body>
</html>
