@-moz-document 
/*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) {

#entries .entry-body, #entries .entry-title {
max-width: none !important;
}
}