if ( !function_exists ( "namespace_css_global" ) ) :
function namespace_css_global() {
    $theme_version = wp_get_theme()->get( "Version" );
    wp_enqueue_style( "namespace_css_global", get_template_directory_uri()."/assets/css/styles.css", array(), $theme_version );
}
add_action( "wp_print_styles", "namespace_css_global", 10 );
endif;