How to specify in htaccess that you need to give pre-compressed files?

Question

htaccess

For css, I use a minifier that puts everything into one file and compresses it with gzip.
Total available

/css/stylesheet.min.css
/css/stylesheet.min.css.gz

This css is inserted into the site as

<link rel="stylesheet" href="/css/stylesheet.min-1456837589.css" />

and in htaccess, respectively, the instruction

RewriteRule ^css/stylesheet.min-([0-9-]+).css$ /css/stylesheet.min.css [L]

Question: how to give the user a compressed version if the browser understands gz?
There is such an instruction, but it is not possible to correct it for my task

<FilesMatch "\.css.gz$">
  ForceType text/css
  Header set Content-Encoding: gzip
</FilesMatch>
<FilesMatch "\.css$">
  RewriteEngine On
  RewriteCond %{HTTP_USER_AGENT} !".*Safari.*"
  RewriteCond %{HTTP:Accept-Encoding} gzip
  RewriteCond %{REQUEST_FILENAME}.gz -f
  RewriteRule (.*)\.css$ $1\.css.gz [L]
  ForceType text/css
</FilesMatch>

Answer 1

and so not?

<IfModule mod_deflate.c>
  # Compress HTML, CSS, JavaScript, Text, XML and fonts
  AddOutputFilterByType DEFLATE application/rss+xml
  AddOutputFilterByType DEFLATE application/vnd.ms-fontobject
  AddOutputFilterByType DEFLATE application/x-font
  AddOutputFilterByType DEFLATE application/x-font-opentype
  AddOutputFilterByType DEFLATE application/x-font-otf
  AddOutputFilterByType DEFLATE application/x-font-truetype
  AddOutputFilterByType DEFLATE application/x-font-ttf
  AddOutputFilterByType DEFLATE application/x-javascript
  AddOutputFilterByType DEFLATE application/xhtml+xml
  AddOutputFilterByType DEFLATE application/xml
  AddOutputFilterByType DEFLATE font/opentype
  AddOutputFilterByType DEFLATE font/otf
  AddOutputFilterByType DEFLATE font/ttf
  AddOutputFilterByType DEFLATE image/svg+xml
  AddOutputFilterByType DEFLATE image/x-icon
  AddOutputFilterByType DEFLATE text/css
  AddOutputFilterByType DEFLATE text/html
  AddOutputFilterByType DEFLATE text/javascript
  AddOutputFilterByType DEFLATE text/plain
  AddOutputFilterByType DEFLATE text/xml
  AddOutputFilterByType DEFLATE image/svg+xml
</IfModule>
<IfModule mod_expires.c>
  ExpiresActive on
  ExpiresByType image/jpeg "access plus 3 day"
  ExpiresByType image/svg "access plus 3 day"
  ExpiresByType image/gif "access plus 3 day"
  ExpiresByType image/png "access plus 3 day"
  ExpiresByType text/javascript "access plus 3 day"
  ExpiresByType text/css "access plus 3 day"
  ExpiresByType application/javascript "access plus 3 day"
</IfModule>