ExpiresActive on
ExpiresByType text/html {mode}{lifetime}
RewriteEngine On
Explicitly prevent direct access here. This is needed because the .htaccess
access check in the root dir is overwritten by the RewriteRules defined here.
RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteRule .* - [F,L]
RewriteCond % >@{expires}
RewriteRule ^.*$ /index.php