style rule to apply to a *row* in a layout grid that will append a button to the end of the input (i.e. an inline-edit button)

_form-control-append-button.scss

.form-control-append-button {
  @extend .form-group;
  > div:first-child {
    @extend .control-label;
    @extend .d-block;
  }
  > div:last-child {
    @extend .flexcontainer;
    > div:first-child {
      @extend .flexitem-main;
      @extend .spacing-outer-bottom-none;
      > input {
        border-top-right-radius: 0px;
        border-bottom-right-radius: 0px;
      }
    }
    > button {
      border-top-left-radius: 0px;
      border-bottom-left-radius: 0px;
      border-left: 0px;
    }
  }
}