navbar.php

<?php
echo '
  <nav>
    <div class="nav-wrapper light-blue darken-1">
      <a href="index.php" class="brand-logo">
        <img class="img-circle" src="img/logo.png">
      </a>
      <a href="index.php" data-activates="mobile-demo" class="button-collapse"><i class="material-icons">menu</i></a>
      <ul class="right hide-on-med-and-down">
        <li><a href="about.php">About</a></li>
        <li><a href="models.php">Models</a></li>
        <li><a href="donations.php">Donations</a></li>
      </ul>
      <ul class="side-nav" id="mobile-demo">
        <li><a href="about.php">About</a></li>
        <li><a href="models.php">Models</a></li>
        <li><a href="donations.php">Donations</a></li>
      </ul>
    </div>
  </nav>'
?>