.btn-group > .btn-group:not(:last-child) > .btn, .btn-group > .btn:not(:last-child):not(.dropdown-toggle) {
  border: none;
}

.btn-group > .btn-group:not(:first-child) > .btn, .btn-group > .btn:not(:first-child) {
  border: none;
}

.btn-group, .btn-group-vertical {
  float: right;
}