@-moz-document 
/* J. F. Mitre
   http://jfmitre.com
   5 Dec 2008
*/

/*Change .com to any (.jp, .ca...)*/
url-prefix(http://www.google.com/reader),
url-prefix(https://www.google.com/reader),
url-prefix(http://www.google.com.br/reader),
url-prefix(https://www.google.com.br/reader) {

#lhn-add-subscription-section{
 display: none !important;
} 

}