Untitled

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Book Now - Demo</title>

    <!-- Bootstrap -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <link href="css/style.css" rel="stylesheet">
  </head>
  <body>
    <div class="container">
      <div class="info">
         <h2 class="bg-primary">Demo - Login to Continue</h2>
         <div class="bg-info">
          <div class="col-md-6 col-md-offset-3">
                    <h4></span>Log in with your credentials</h4><br/>
			   <h4>Admin Login - Username: admin Password: demo<br>
            Customer Login - Username: customer Password: demo</h4><br>
			 </br>
                            <div class="block-margin-top">
                              <?php

                                $errors = array(
                                    1=>"Invalid user name or password, Try again",
                                    2=>"Please login to access this area"
                                  );

                                $error_id = isset($_GET['err']) ? (int)$_GET['err'] : 0;

                                if ($error_id == 1) {
                                        echo '<p class="text-danger">'.$errors[$error_id].'</p>';
                                    }elseif ($error_id == 2) {
                                        echo '<p class="text-danger">'.$errors[$error_id].'</p>';
                                    }
                               ?>

                              <form action="authenticate.php" method="POST" class="form-signin col-md-8 col-md-offset-2" role="form">
                                  <input type="text" name="username" class="form-control" placeholder="Username" required autofocus><br/>
                                  <input type="password" name="password" class="form-control" placeholder="Password" required><br/>
                                  <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>