public function render($registerNewUser, $isLoggedIn, iLayoutView $v, DateTimeView $dtv, iLayoutView $content = null)
    {
        ?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Todo-app Example</title>
    <link rel="stylesheet" href="/style/custom.css">
  </head>
  <body>
    <h1>Project in PHP</h1>
    <?php 
        if ($registerNewUser) {
            echo '<a href="./">Back to login</a>';
        } else {
            echo '<a href="?register">Register a new user</a>';
        }
        if ($isLoggedIn) {
            echo "<h2>Logged in</h2>";
        } else {
            echo "<h2>Not logged in</h2>";
        }
        ?>
    <div class="container" >
      <?php 
        echo $v->response();
        if ($content) {
            echo "<br />" . $content->response();
        }
        $dtv->show();
        ?>
    </div>

    <div>
      <em>This site uses cookies to improve user experience. By continuing to browse the site you are agreeing to our use of cookies.</em>
    </div>
   </body>
</html>
<?php 
    }
    public function render($registerNewUser, $isLoggedIn, iLayoutView $v, DateTimeView $dtv)
    {
        ?>
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Login Example</title>
  </head>
  <body>
    <h1>Assignment 4</h1>
    <?php 
        if ($registerNewUser) {
            echo '<a href="./">Back to login</a>';
        } else {
            echo '<a href="?register">Register a new user</a>';
        }
        if ($isLoggedIn) {
            echo "<h2>Logged in</h2>";
        } else {
            echo "<h2>Not logged in</h2>";
        }
        ?>
    <div class="container" >
      <?php 
        echo $v->response();
        $dtv->show();
        ?>
    </div>

    <div>
      <em>This site uses cookies to improve user experience. By continuing to browse the site you are agreeing to our use of cookies.</em>
    </div>
   </body>
</html>
<?php 
    }