index.php

<?php include('includes/header.php'); ?>
  <div class="container">
    <section class="content">
      <h1>Heading 1</h1>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Rerum, dolorum, accusamus voluptatibus debitis numquam exercitationem quasi hic itaque consequatur quisquam ipsam animi aperiam blanditiis vero id explicabo consectetur placeat nesciunt!</p>
    </section>

    <aside class="sidebar">
      <h2>Sidebar</h2>
      <ul>
        <li>Item 1</li>
        <li>Item 2</li>
        <li>Item 3</li>
      </ul>
    </aside>
  </div>
<?php include('includes/footer.php'); ?>