.input-group {
  .btn-group:not(:last-child) > :not(:first-child) {
    border-start-end-radius: 0px;
    border-end-end-radius: 0px;
  }
  .btn-group:not(:last-child) > :not(:last-child) {
    border-start-start-radius: 0px;
    border-end-start-radius: 0px;
  }
  .btn-group:not(:first-child) > :not(:last-child) {
    border-end-start-radius: 0px;
    border-start-start-radius: 0px;
  }
}