source: lightning/12.1.1/footer.php

<?php if ( is_active_sidebar( 'footer-upper-widget-1' ) ) : ?>
<div class="section sectionBox siteContent_after">
        <div class="container ">
                <div class="row ">
                        <div class="col-md-12 ">
                        <?php dynamic_sidebar( 'footer-upper-widget-1' ); ?>
                        </div>
                </div>
        </div>
</div>
<?php endif; ?>

<?php do_action( 'lightning_footer_before' ); ?>

<footer class="<?php lightning_the_class_name( 'siteFooter' ); ?>">
        <div class="footerMenu">
           <div class="container">
                        <?php
                        wp_nav_menu(
                                array(
                                        'theme_location' => 'Footer',
                                        'container'      => 'nav',
                                        'items_wrap'     => '<ul id="%1$s" class="%2$s nav">%3$s</ul>',
                                        'fallback_cb'    => '',
                                        'depth'          => 1,
                                )
                        );
                        ?>
                </div>
        </div>
        <div class="container sectionBox footerWidget">
                <div class="row">
                        <?php
                        // Area setting
                        $footer_widget_area = array(
                                // Use 1 widget area
                                1 => array( 'class' => 'col-md-12' ),
                                // Use 2 widget area
                                2 => array( 'class' => 'col-md-6' ),
                                // Use 3 widget area
                                3 => array( 'class' => 'col-md-4' ),
                                // Use 4 widget area
                                4 => array( 'class' => 'col-md-3' ),
                                // Use 6 widget area
                                6 => array( 'class' => 'col-md-2' ),
                        );

                        $footer_widget_area_count = 3;
                        $footer_widget_area_count = apply_filters( 'lightning_footer_widget_area_count', $footer_widget_area_count );

                        // Print widget area
                        for ( $i = 1; $i <= $footer_widget_area_count; ) {
                                echo '<div class="' . $footer_widget_area[ $footer_widget_area_count ]['class'] . '">';
                                if ( is_active_sidebar( 'footer-widget-' . $i ) ) {
                                        dynamic_sidebar( 'footer-widget-' . $i );
                                }
                                echo '</div>';
                                $i++;
                        }
                        ?>
                </div>
        </div>

        <?php do_action( 'lightning_copySection_before' ); ?>

        <div class="container sectionBox copySection text-center">
                        <?php lightning_the_footerCopyRight(); ?>
        </div>
</footer>
<?php do_action( 'lightning_footer_after' ); ?>
<?php wp_footer(); ?>
</body>
</html>