To add this footer I have followed this tutorial. So here you will find all the code I have implemented.
And this is the all code of my footer.php:
<div id="footer-widgets">
<div id="footer-widget1">
<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('footer-1') ) : ?>
<?php endif; ?>
</div>
<div id="footer-widget2">
<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('footer-2') ) : ?>
<?php endif; ?>
</div>
<div id="footer-widget3">
<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('footer-3') ) : ?>
<?php endif; ?>
</div>
</div>
<div style="clear-both"></div>
<div class="clear"></div>
<div id="footer">
<div class="left">©
<?php the_time('Y'); ?>
· <a href="<?php bloginfo('siteurl'); ?>">
<?php bloginfo('name'); ?>
</a> · <span class="rss"><a href="<?php bloginfo('rss2_url'); ?>" title="Subscribe to Posts feed">Posts</a></span> · <span class="rss" title="Subscribe to Comments feed"><a href="<?php bloginfo('comments_rss2_url'); ?>">Comments</a></span> </div>
<div class="right"> Designed by <a href="https://www.bestwp.net/">Best WordPress Themes</a> · Powered by <a href="https://www.www.remarpro.com">WordPress</a> </div>
<div class="clear"></div>
</div>
<!--end: footer-->
</div>
<!--end: wrapper-->
<?php if(get_theme_mod('track') == 'Yes') { ?>
<!--begin: blog tracking-->
<?php echo stripslashes(get_theme_mod('track_code')); ?>
<!--end: blog tracking-->
<?php } else { ?>
<?php } ?>
<?php wp_footer(); ?>
</body></html>
<?php
// Custom widget Area Start
if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('My Custom Widget Area - 1') ) : ?>
<?php endif;
// Custom widget Area End
?>