Options -Indexes
DirectoryIndex index.php

RewriteEngine on

RewriteRule ^error\.html$               index.php?id=1
RewriteRule ^lorem\.html$               index.php?id=2
RewriteRule ^ipsum\.html$               index.php?id=3
RewriteRule ^dolor\.html$               index.php?id=4
RewriteRule ^sit-amet\.html$            index.php?id=5

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

<Files ~ ".*$">
    Order allow,deny
    Deny from all
</Files>

<Files ~ "index\.php$">
    Order allow,deny
    Allow from all
</Files>

<Files ~ "\.html$">
    Order allow,deny
    Allow from all
</Files>

<Files ~ "\.css$">
    Order allow,deny
    Allow from all
</Files>

<Files ~ "\.png$">
    Order allow,deny
    Allow from all
</Files>

<Files ~ "^$">
    Order allow,deny
    Allow from all
</Files>
