Options +FollowSymlinks
RewriteEngine On

RewriteCond %{HTTP_HOST}//s%{HTTPS} ^www\.(.*)//((s)on|s.*)$ [NC]
RewriteRule ^ http%3://%1%{REQUEST_URI} [L,R=301]

RewriteRule (.*)\.html$ index.php?page=$1
RewriteRule (.*)/(.*)\.html$ index.php?page=$1&id=$2

ErrorDocument 404 /404.html