.flag {
  display: inline-block;
  width: 24px;
  height: 24px;
  background: url('flags.png') no-repeat;
}


.flag.flag-br {
  background-position: -24px 0;
}

.flag.flag-gb {
  background-position: 0 -24px;
}

.flag{display:inline-block;width:24px;height:24px;background:url('flags.png') no-repeat}.flag.flag-br{background-position:-24px 0}.flag.flag-gb{background-position:0 -24px}