Integrate Bootstrap on CodeIgniter

move bootstrap folder on root location, because CI is understanding application folder as controller although application folder is restricted from client request by /application/.htaccess file

|-
   |-application
   |-bootstrap

//and use path as
<?php echo base_url('bootstrap/css/bootstrap.min.css');?>

Here's the best guide I've found so far: How to include bootstrap in CI

In short:

  1. Download bootstrap

  2. Put it in an assets folder on same level as application folder

  3. Also put jquery

  4. Include css in header and jquery in footer of your templates:

<html>
  <head>
      <title>CodeIgniter Tutorial</title>
      <link rel="stylesheet" href="<?php echo base_url("assets/css/bootstrap.css"); ?>" />
  </head>
  <body>
      <h1>H_E_A_D_E_R</h1>

and :

<hr/>
<em>&copy; 2016</em>
<script type="text/javascript" src="<?php echo base_url("assets/js/jquery-3.1.1.js"); ?>"></script>
<script type="text/javascript" src="<?php echo base_url("assets/js/bootstrap.js"); ?>"></script>
</body>
</html>