Hi there,
This site is all separate containers, the pages that aren’t are using the Sections add-on.
However, you could try a function like this:
add_filter( 'body_class', 'ivan_body_class', 100, 2 );
function ivan_body_class( $wp_classes, $extra_classes )
{
$wp_classes[] = 'one-container';
if ( is_front_page() ) {
$wp_classes = array_diff( $wp_classes, array( 'separate-containers' ) );
} else {
$wp_classes = array_diff( $wp_classes, array( 'one-container' ) );
}
// Add the extra classes back untouched
return array_merge( $wp_classes, (array) $extra_classes );
}
Adding PHP: https://generatepress.com/knowledgebase/adding-php-functions/