<IfModule mod_deflate.c>
  <FilesMatch "\\.(css)$">
  SetOutputFilter DEFLATE
  </FilesMatch>
</IfModule>

<IfModule mod_headers.c>
Header append Cache-Control "public, must-revalidate, proxy-revalidate"
  <FilesMatch .*\.css.gz$>
  ForceType text/css
  Header set Content-Encoding: gzip
  Header set Cache-control: private
  Header append Vary Accept-Encoding
  Header append Vary User-Agent env=!dont-vary
  </FilesMatch>
</IfModule>