Redirection not working on folders?

Question

Apache HTTP Server

For CNC there is a redirect to index.php

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php

But when you enter a query that matches the name of the folder, the redirect does not work.
For example, when you enter site.ru/css, it displays a list of files from the css folder. Changing the access rights of this folder does not help, instead of a list of files, the inscription "access denied" appears.
At the same time, everything works fine with other requests.
Can I fix this, or will I have to deny access to all folders and make links other than folder names?

Answer 1

Remove RewriteCond %{REQUEST_FILENAME} !-d
And may need to be addedDirectorySlash off