twentyseventeen_body_classes( array $classes ): string[]

16function twentyseventeen_body_classes( $classes ) {17	// Add class of group-blog to blogs with more than 1 published author.18	if ( is_multi_author() ) {19		$classes[] = 'group-blog';20	}21 22	// Add class of hfeed to non-singular pages.23	if ( ! is_singular() ) {24		$classes[] = 'hfeed';25	}26 27	// Add class if we're viewing the Customizer for easier styling of theme options.28	if ( is_customize_preview() ) {29		$classes[] = 'twentyseventeen-customizer';30	}31 32	// Add class on front page.33	if ( is_front_page() && 'posts' !== get_option( 'show_on_front' ) ) {34		$classes[] = 'twentyseventeen-front-page';35	}36 37	// Add a class if there is a custom header.38	if ( has_header_image() ) {39		$classes[] = 'has-header-image';40	}41 42	// Add class if sidebar is used.43	if ( is_active_sidebar( 'sidebar-1' ) && ! is_page() ) {44		$classes[] = 'has-sidebar';45	}46 47	// Add class for one or two column page layouts.48	if ( is_page() || is_archive() ) {49		if ( 'one-column' === get_theme_mod( 'page_layout' ) ) {50			$classes[] = 'page-one-column';51		} else {52			$classes[] = 'page-two-column';53		}54	}55 56	// Add class if the site title and tagline is hidden.57	if ( 'blank' === get_header_textcolor() ) {58		$classes[] = 'title-tagline-hidden';59	}60 61	// Get the colorscheme or the default if there isn't one.62	$colors    = twentyseventeen_sanitize_colorscheme( get_theme_mod( 'colorscheme', 'light' ) );63	$classes[] = 'colors-' . $colors;64 65	return $classes;66}