Code-Snippets-Functions/Execute a function on a child site/Fluent Forms/disable-default-css-for-specific-forms.txt

add_filter('fluentform/load_default_public', function($status, $form) {
    $targetForms = [1,2,3]; // form ids that you want to disable default styles
    if(in_array($form->id, $targetForms)) {
        return false;
    }
    return $status;
}, 10, 2);