AddDefaultCharset utf-8
Options +FollowSymLinks -Indexes
DirectorySlash Off

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} (.+)/$
RewriteRule ^(.*)$ /$1 [R=301,L]

RewriteCond %{HTTP_HOST} ^www.(.*)$ [NC]
RewriteRule ^(.*)$ http://%1/$1 [R=301,L]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{THE_REQUEST} ^GET /[^?s]+.html
RewriteRule (.*).html$ /$1 [L,R=301]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule (.*)/$ $1.html [L]

# Remove trailing slash:
RewriteRule (.*)/$ $1 [L,R=301]

# Now test without the trailing slash:
RewriteCond %{REQUEST_FILENAME}.html -f
RewriteRule . %{REQUEST_FILENAME}.html [QSA,L]

RewriteRule ^(.*)index.(html?)$ /$1 [R=301,NC,L]
</IfModule>

<Files .htaccess>
    order allow,deny
    deny from all
</Files>

ErrorDocument 404 /404.html
ErrorDocument 403 /404.html