Expire headers .htaccess code.

.htaccess

<IfModule mod_expires.c>
  ExpiresActive on

  ExpiresDefault                              "access plus 3 days"

# Favicon
  ExpiresByType image/x-icon                  "access plus 1 month"

# Media: images, video, audio
  ExpiresByType image/gif                     "access plus 1 month"
  ExpiresByType image/png                     "access plus 1 month"
  ExpiresByType image/jpeg                    "access plus 1 month"
  ExpiresByType image/jpg                     "access plus 1 month"
  ExpiresByType video/ogg                     "access plus 1 month"
  ExpiresByType audio/ogg                     "access plus 1 month"
  ExpiresByType video/mp4                     "access plus 1 month"
  ExpiresByType video/webm                    "access plus 1 month"
  ExpiresByType application/pdf               "access plus 1 month"

# Webfonts
  ExpiresByType application/x-font-ttf        "access plus 1 month"
  ExpiresByType font/opentype                 "access plus 1 month"
  ExpiresByType application/x-font-woff       "access plus 1 month"
  ExpiresByType image/svg+xml                 "access plus 1 month"
  ExpiresByType application/vnd.ms-fontobject "access plus 1 month"

# CSS and JavaScript
  ExpiresByType text/css                      "access plus 1 week"
  ExpiresByType text/javascript               "access plus 1 week"
  ExpiresByType text/x-javascript             "access plus 1 week"
  ExpiresByType application/javascript        "access plus 1 week"
  ExpiresByType application/x-javascript      "access plus 1 week"
  ExpiresByType application/x-shockwave-flash "access plus 1 month"

</IfModule>