Astra_Ext_Header_Sections_Markup::header_classes( array $classes )

		public function header_classes( $classes ) {
				// Apply Above header layout class to the header.
				$above_header_enabled = $this->astra_above_header_enabled();

				$above_header_layout = astra_get_option( 'above-header-layout' );
				$above_header_swap   = astra_get_option( 'above-header-swap-mobile' );
				$above_header_merge  = astra_get_option( 'above-header-merge-menu' );

			if ( $above_header_enabled ) {
					$classes[] = 'ast-above-header-enabled';
				if ( $this->astra_above_header_merged_enabled() && $this->astra_above_header_has_menu() ) {
					$classes[] = 'ast-above-header-merged-responsive';
				} else {
					$classes[] = 'ast-above-header-section-separated';
				}
			}

			if ( $above_header_enabled && $above_header_swap && 'above-header-layout-1' === $above_header_layout ) {
				$classes[] = 'ast-swap-above-header-sections';
			}

				// Apply Below header layout class to the header.
				$below_header_enabled = $this->astra_below_header_enabled();
			if ( $below_header_enabled ) {
					$classes[] = 'ast-below-header-enabled';
				if ( $this->astra_below_header_merged_enabled() && $this->astra_below_header_has_menu() ) {
					$classes[] = 'ast-below-header-merged-responsive';
				} else {
					$classes[] = 'ast-below-header-section-separated';
				}
			}

			$below_header_layout = astra_get_option( 'below-header-layout' );
			$below_header_swap   = astra_get_option( 'below-header-swap-mobile' );
			$below_header_merge  = astra_get_option( 'below-header-merge-menu' );

			if ( $below_header_enabled && $below_header_swap && ! $below_header_merge && 'below-header-layout-1' === $below_header_layout ) {
				$classes[] = 'ast-swap-below-header-sections';
			}

			// Apply Above / Below header mobile align class.
			$classes[] = 'ast-above-header-mobile-' . astra_get_option( 'above-header-menu-align' );
			$classes[] = 'ast-below-header-mobile-' . astra_get_option( 'below-header-menu-align' );

			return $classes;
		}