Look for
function sccss_register_style() {
wp_register_style( ‘sccss_style’, add_query_arg( array( ‘sccss’ => 1 ), home_url() ) );
wp_enqueue_style( ‘sccss_style’ );
}
add_action( ‘wp_enqueue_scripts’, ‘sccss_register_style’, 99 );
in /includes/public.php