How can i load the css file in views/css/stylesheet.css in CI? My index file is in views/firstView.php

How can i load the css file in views/css/stylesheet.css in CI? My index
file is in views/firstView.php

I am completely new to code igniter. Thought editing the config.php like
this would work:
$config['index_page'] =
'localhost/Projects/first_CI/application/views/firstView.php';
but its not working :( . Can any one suggest anything