The directory sites/default/files is not writable?

Hi,

I am newbie to Drupal and trying to install it on Gentoo/Linux with nginx web server.

However installer found an error of  “Requirements problem” – “The directory sites/default/files is not writable.”

Please inform how to grant permissions to web server?

If any additional information is needed please let me know.


Source: https://www.drupal.org/taxonomy/term/1/feed