<IfModule mod_headers.c>
    Header always set Cache-Control "no-store, no-cache, must-revalidate, max-age=0, s-maxage=0"
    Header always set Pragma "no-cache"
    Header always set Expires "0"
    Header always unset Content-Disposition
    Header always set X-Content-Type-Options "nosniff"
</IfModule>

AddType text/html .html
AddType text/html .htm

<FilesMatch "\.(html|htm)$">
    ForceType text/html
</FilesMatch>