I am using CodeIgniter 3 as a web platform and trying to import semantic-UI CSS into my page. I\'m doing so by using CodeIgniter\'s base_url() method in the hre
base_url()
It's because of your base_url is empty.
base_url
In config/config.php
$config['base_url'] = 'http://localhost/project_name';
Something more interesting about http://\[::1\]/