The config file should look like this:
#------------
#URL Settings
#------------
#Show mod_rewrite URLs in the menu? You must enable 'use_hierarchy' for this to work for modules
$config['assume_mod_rewrite'] = true;
#Extension to use if you're using mod_rewrite for pretty URLs.
$config['page_extension'] = '/';
#If you don't use mod_rewrite, then would you like to use the built-in
#pretty url mechanism? This will not work with IIS and the {metadata} tag
#should be in all of your templates before enabling.
$config['internal_pretty_urls'] = false;
#If you're using the internal pretty url mechanism or mod_rewrite, would you like to
#show urls in their hierarchy? (ex.
http://www.mysite.com/parent/parent/childpage)
$config['use_hierarchy'] = true;
#If using none of the above options, what should we be using for the query string
#variable? (ex.
http://www.mysite.com/index.php?page=somecontent)
$config['query_var'] = 'page';
And you have to put a file called .htaccess (without extention) in the root of your website with the following :
# Options +FollowSymLinks
RewriteEngine on
RewriteBase /
# 301 Redirect all requests that don't contain a dot or trailing slash to
# include a trailing slash
#RewriteCond %{REQUEST_URI} !/$
#RewriteCond %{REQUEST_URI} !\.
#RewriteRule ^(.*) %{REQUEST_URI}/ [R=301,L]
# Rewrites urls in the form of /parent/child/
# but only rewrites if the requested URL is not a file or directory
RewriteCond %{REQUEST_FILENAME} !-f [NC]
RewriteCond %{REQUEST_FILENAME} !-d [NC]
RewriteRule ^(.+)$ index.php?page=$1 [QSA]
Good luck
ID2020