configure css template in codeigniter

<?php
class MY_Controller extends CI_Controller {

    function __construct() {
        parent::__construct();
    }
    public function loadHeader($data = Array(),$customHeader = 'parts/header'){
        $this->load->view($customHeader,$data);
    }
    public function loadFooter($data = Array(),$customFooter = 'parts/footer'){
        $this->load->view($customFooter,$data);
    }
    public function loadSidebar($data = Array(),$customSidebar = 'parts/sidebar'){
        $this->load->view($customSidebar,$data);
    }
}

class Articles extends MY_Controller {
    public function  __construct() {
        parent::__construct();
    }
    /**
     * Controller for all news.
     * will be used as home controller.
     */
    public function index() {
        //Needed helper

        //End helper
        $data = Array();
        //Fill the array for the header part
        $data["header"] = Array();
        $data["header"]["title"] = "Articles shelf";
        $data["header"]["logo"] = "David Francoeur";
        $data["header"]["slogan"] = "just a blog about me and knowledge...";
        $this->loadHeader($data["header"]);// I would add a second parameter for a custom header.
        //Fill the array for the rest of the pages
        $data["main"] = Array();
        $this->load->model('Article');
        $data["main"]["query"] = $this->Article->get_last_ten_entries();
        $this->load->view('article', $data["main"]);
        //Fill the array for the right sidebar
        $data["sidebar"] = Array();
        $this->loadSidebar($data["sidebar"]);
        //Fill the array for data concerning the footer
        $data["footer"] = Array();
        $this->loadFooter($data["footer"]);//I would add a second parameter for a custom footer.
    }
}

//Then from my controller I do something like this : 

class Articles extends MY_Controller {
    public function  __construct() {
        parent::__construct();
    }
    /**
     * Controller for all news.
     * will be used as home controller.
     */
    public function index() {
        //Needed helper

        //End helper
        $data = Array();
        //Fill the array for the header part
        $data["header"] = Array();
        $data["header"]["title"] = "Articles shelf";
        $data["header"]["logo"] = "David Francoeur";
        $data["header"]["slogan"] = "just a blog about me and knowledge...";
        $this->loadHeader($data["header"]);// I would add a second parameter for a custom header.
        //Fill the array for the rest of the pages
        $data["main"] = Array();
        $this->load->model('Article');
        $data["main"]["query"] = $this->Article->get_last_ten_entries();
        $this->load->view('article', $data["main"]);
        //Fill the array for the right sidebar
        $data["sidebar"] = Array();
        $this->loadSidebar($data["sidebar"]);
        //Fill the array for data concerning the footer
        $data["footer"] = Array();
        $this->loadFooter($data["footer"]);//I would add a second parameter for a custom footer.
    }
}

//You could also use a single function in your custom controller
//if you don't need custom header or footer something like : 
class MY_Controller extends CI_Controller {
function __construct() {
    parent::__construct();
}
public function loadView($data = Array(),$view){
    $this->load->view("header_final");
    $this->load->view($view,$data);
    $this->load->view("footer-final");
}
}

?>