css is not loading

[eluser]mehwish[/eluser]
hi i am facing problem in loading css file.

Code:

<?php  //if ( ! defined("BASEPATH")) exit("No direct script access allowed");


class Controller2 extends CI_Controller
{


function index()
{
if ($this->input->post('button'))
$this->test();
else
$this->load->view('2');
}



function test()
{
$this->load->view('2');
}
} ?>

when i first call my controller index function it is loading view "2" with proper html and css but when i press a button inside my "2" view my controller is calling another function TEST but this time test is not loading the same view with css.

can anyone solve this?

css codeigniter