Center Logo and Navigation in Header

Trying to center my logo over the main navigation using the instructions from this thread, but no luck.

https://wpthms.com/support/topic/center-navigation-bar/

I am using a child theme and placed the following code in my custom-funcitons.php file, but it’s not working. I am using the most recent version of Sparkle (2.0.7) so I wonder if the following code no longer works with the current theme version considering the thread I am referencing is almost a year old? Please advise, thanks!

remove_action( 'yt_inside_header','yt_site_branding', 15);
add_action( 'yt_inside_header','yt_site_branding10282014', 14); 

function yt_site_branding10282014(){
	
	/**
	 * Retrieve Options data
	 */
	$heading = is_home() ? 'h1' : 'h3';
	

	//Branding
	$branding = '<div class="col-md-12 site-branding pull-left">
		<'.$heading.' class="site-logo plain-text-logo"><a href="' . esc_url( home_url( '/' ) ) . '" title="' . esc_attr( yt_get_options('plain_logo_text') ) . '" rel="home">' . yt_get_options('plain_logo_text') . '</a></'.$heading.'>
	</div>';
	
	if( !yt_get_options('plain_logo') && yt_get_options('logo') ){
		$branding = '<div class="col-md-12 site-branding pull-left">
			<'.$heading.' class="site-logo image-logo"><a href="' . esc_url( home_url( '/' ) ) . '" title="' . esc_attr( yt_get_options('plain_logo_text') ) . '" rel="home"><img alt="' . esc_attr( yt_get_options('plain_logo_text') ) . '" src="'. esc_url( yt_get_options('logo') ) .'">' . '</a></'.$heading.'>
		</div>';
	}
	
	$branding = apply_filters( 'yt_site_branding', $branding );

	echo $branding;
	
}

remove_action( 'yt_inside_header','yt_site_primary_nav', 15 );

add_action( 'yt_inside_header','yt_site_primary_nav10282014', 20);
function yt_site_primary_nav10282014(){
	$primary_menu = '';
	//Navnav
	if ( has_nav_menu( 'primary' ) ) {
		$primary_menu = wp_nav_menu(
			apply_filters( 'yt_site_primary_navigation_args', array( 
				'theme_location' => 'primary' , 
				'echo' => false, 
				'container_class' => 'site-navigation-menu-container',
				'menu_class'      => 'menu',
				'depth' => 5,
				'walker' => new YT_Walker_Nav_Mega_Menu_By_Category()
			))
		);
	}else{
		$primary_menu = '<ul class="menu"><li>' . sprintf( __('Create a Menu in <a href="%s">Menus</a> and assign it as Primary Menu in <a href="%s">Theme Location</a>', 'wpthms'), admin_url('nav-menus.php'), admin_url('nav-menus.php?action=locations') ) . '</li></ul>';
	}
	
	$site_navigaton = '<nav id="site-navigation" class="col-sm-12 col-md-12 main-navigation" role="navigation">
		<div class="sr-only skip-link"><a href="#content" title="' . esc_attr( 'Skip to content', 'wpthms' ) . '">' . __( 'Skip to content', 'wpthms' ) . '</a></div>

		' . $primary_menu . '
	</nav><!-- #site-navigation -->';
	
	//Allow editing site
	$site_navigaton = yt_apply_atomic( 'site_primary_menu', $site_navigaton );
	
	echo $site_navigaton;
}