.btn-label {
  position:relative;
  left:-12px;
  display:inline-block;
  padding:6px 12px;
  background:rgba(0,0,0,0.15);
  border-radius:3px 0 0 3px;
}

.btn-labeled {
  padding-top:0;
  padding-bottom:0;
}

.btn {
  margin-bottom:10px;
}