add_filter( 'fl_builder_render_css', function( $css, $nodes, $global_settings, $include_global ) {
require_once FL_BUILDER_DIR . 'includes/vendor/sass/autoload.php';
$compiler = new ScssPhp\ScssPhp\Compiler();
try {
$css = $compiler->compileString( $css )->getCSS();
} catch ( Exception $e ) {}
return $css;
}, 10, 4 );