What & How & Why

<sxh apache round 11-15> <ifmodule mod_deflate.c> DeflateCompressionLevel 6 AddOutputFilterByType DEFLATE text/plain AddOutputFilterByType DEFLATE text/html AddOutputFilterByType DEFLATE text/php AddOutputFilterByType DEFLATE text/xml AddOutputFilterByType DEFLATE text/css AddOutputFilterByType DEFLATE text/javascript AddOutputFilterByType DEFLATE application/javascript </ifmodule>

<IfModule mod_expires.c> # enable expirations ExpiresActive On ExpiresDefault A2592000 # expire images after a month in the client's cache ExpiresByType image/gif A2592000 ExpiresByType image/jpg A2592000 ExpiresByType image/jpeg A2592000 ExpiresByType image/png A2592000 # css/js ExpiresByType text/css “access plus 4 weeks” ExpiresByType text/javascript “access plus 4 weeks” # html ExpiresByType text/html “access plus 2 days” </IfModule>

</sxh> <sxh css> .verticalcenter{

  position: relative;
  top: 50%;
  -webkit-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);

} </sxh>