PE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<link rel="stylesheet" href="css/bootstrap.css">
</head>
<body style="padding:20px">
<h2 class="text-center">用户登录</h2>
<form action="#" >
<input placeholder="请输入账号" type="text" class="form-control"><br>
<input placeholder="请输入密码" type="text" class="form-control"><br>
<input type="submit" value="登录" class="btn btn-success btn-block">
</form>
</body>
</html>