<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<title>Frist Html Titutorial</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.css">
<style type="text/css">
</style>
</head>
<body>
<div class="form-box">
<div class="form-group">
<label for="usr">Name:</label>
<input type="text" class="form-control" id="usr">
</div>
<div class="form-group">
<label for="pwd">Password:</label>
<input type="password" class="form-control" id="pwd">
</div>
<div class="form-group">
<input type="submit" class="btn btn-default submit-btn" value="Submit"></input>
</div>
</div>
</body>
</html>