I have this code and I want to add a stylesheet file to my page in my CI project. I have set the config file to 

```
$config['base_url'] = 'localhost/project/';

```

However, the link that tries to get this file includes index.php and in return I cannot link the stylesheet. What is wrong with my code?

```
<link href="../<?php base_url();?>vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">

```

When I echo the base url it shows localhost/project/.

This is the error: GET <http://localhost/project/index.php/vendor/bootstrap/css/bootstrap.min.css> 404 (Not Found)