title: External CSS link is not working in codeIgniter
body: <p>I have tried base_url() function, But I didn't understand where am I wrong?
  I have also mentioned - <code>$this-&gt;load-&gt;helper ('URL');</code> in function <code>abc()</code> in controller.
  Here is my code,</p>
  
  <p><code>&lt;link href="&lt;?PHP echo base_url();?&gt;assets/css/bootstrap.min.css" rel="stylesheet" type="text/CSS"/&gt;</code></p>