<FilesMatch "^css__[A-Za-z0-9-_]{43}__[A-Za-z0-9-_]{43}__[A-Za-z0-9-_]{43}.css(.gz)?">
# No mod_headers. Apache module headers is not enabled.
<IfModule !mod_headers.c>
# No mod_expires. Apache module expires is not enabled.
<IfModule !mod_expires.c>
# Use ETags.
FileETag MTime Size
</IfModule>
</IfModule>
# Use Expires Directive if apache module expires is enabled.
<IfModule mod_expires.c>
# Do not use ETags.
FileETag None
# Enable expirations.
ExpiresActive On
# Cache all aggregated css files for 52 weeks after access (A).
ExpiresDefault A31449600
</IfModule>
# Use Headers Directive if apache module headers is enabled.
<IfModule mod_headers.c>
# Do not use etags for cache validation.
Header unset ETag
# Serve correct content type.
Header set Content-Type text/css
<IfModule !mod_expires.c>
# Set a far future Cache-Control header to 52 weeks.
Header set Cache-Control "max-age=31449600, no-transform, public"
</IfModule>
<IfModule mod_expires.c>
Header append Cache-Control "no-transform, public"
</IfModule>
</IfModule>
ForceType text/css
</FilesMatch>