How to include the styles of the OpenCart module?

Question

css

Good time of the day to everyone I
lifted the module from the content to the header
and brought it out. but for some reason the styles does not connect
the styles connection inside the catalog\controller\module\new_category_menu.php

<?php
class ControllerModuleNewCategoryMenu extends Controller {
  public function index() {
    $this->load->language('module/new_category_menu');
    
    
    $this->document->addStyle('catalog/view/javascript/newcategory/new_category_menu.css');
    $data['heading_title'] = $this->language->get('heading_title');

    if (isset($this->request->get['path'])) {
      $parts = explode('_', (string)$this->request->get['path']);
    } else {
      $parts = array();
    }

in any other position. except for the hat. the module connects styles
Why such side happened?
can anyone advise?

Answer 1

1) Styles must be included before rendering the header, make sure to do so.
2) Check if paths are correct
3) File cache