footer.php

<footer class="main-footer page-layout__section">

  <nav role="navigation">
      <?php wp_nav_menu([
          'container'       => '',                              // remove nav container
          'container_class' => 'footer-links cf',         // class of container (should you choose to use it)
          'menu'            => __('Footer Links', 'theme'),   // nav name
          'menu_class'      => 'nav footer-nav cf',            // adding custom nav class
          'theme_location'  => 'footer-links',             // where it's located in the theme
          'before'          => '',                                 // before the menu
          'after'           => '',                                  // after the menu
          'link_before'     => '',                            // before each link
          'link_after'      => '',                             // after each link
          'depth'           => 0,                                   // limit the depth of the nav
      ]); ?>
  </nav>

  <p class="copyright">&copy; <?php echo date('Y'); ?> <?php bloginfo('name'); ?>.</p>

</footer>

<?php wp_footer(); ?>

</body>

</html>