<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<div class="span4 offset4 well">
<legend>Please Sign In</legend>
<div class="alert alert-error">
<a class="close" data-dismiss="alert" href="#">×</a>Incorrect Username or Password!
</div>
<form method="POST" action="" accept-charset="UTF-8">
<input type="text" id="username" class="span4" name="username" placeholder="Username">
<input type="password" id="password" class="span4" name="password" placeholder="Password">
<label class="checkbox">
<input type="checkbox" name="remember" value="1"> Remember Me
</label>
<button type="submit" name="submit" class="btn btn-info btn-block">Sign in</button>
</form>
</div>
</div>
</div>