File: /var/www/html/wp-content/themes/wise-blog/inc/body-classes.php
<?php
/**
 * Adds custom classes to the array of body classes.
 *
 * @param array $classes Classes for the body element.
 * @return array
 */
function wise_blog_body_classes( $classes ) {
	// Adds a class of hfeed to non-singular pages.
	if ( ! is_singular() ) {
		$classes[] = 'hfeed';
	}
	// Adds a class of no-sidebar when there is no sidebar present.
	if ( ! is_active_sidebar( 'sidebar-1' ) ) {
		$classes[] = 'no-sidebar';
	}
	$classes[] = 'artify-wise-blog';
	$classes[] = wise_blog_sidebar_layout();
	return $classes;
}
add_filter( 'body_class', 'wise_blog_body_classes' );