@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("h33t.com") {
table.lista + center + table > tbody > tr:first-child + tr,
table.lista + center + table + table.lista + center,
body > table:first-child + br + table.lista + br + table.lista + center

 {
  display: none !important;
  
  }
}