@-moz-document domain(mail.google.com) {
  table.tlc.clc col:first-child { width: 25px !important;}
  table.tlc.clc col:first-child + col { width: 220px !important;}
  table.tlc.clc col:first-child + col + col { width: 100% !important;}
  table.tlc.clc col:first-child + col + col + col { width: 100px !important;}
}