DirectoryIndex index.html index.php

<IfModule LiteSpeed>
    CacheDisable public /
    CacheDisable private /
    CacheLookup public off
</IfModule>

RewriteEngine On

RewriteRule ^$ index.html [L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]

<IfModule mod_headers.c>
    <FilesMatch "\.(html?|php)$">
        Header always set Cache-Control "no-store, no-cache, must-revalidate, max-age=0"
        Header always set Pragma "no-cache"
        Header always set Expires "0"
    </FilesMatch>
</IfModule>