grafana/public/sass/components/_toggle_button_group.scss

.toggle-button-group {
  display: flex;

  .btn {
    @include buttonBackground($btn-inverse-bg, $btn-inverse-bg-hl, $btn-inverse-text-color, $btn-inverse-text-shadow);

    height: $input-height;
    padding: 7px 10px;
    font-weight: $font-weight-semi-bold;
    font-size: $font-size-sm;
    border-radius: 0;
    border-right: $button-toggle-group-btn-separator-border;

    &.active {
      background: $button-toggle-group-btn-active-bg;
      box-shadow: $button-toggle-group-btn-active-shadow;
      border-right: 0;
      color: $white;

      &:hover {
        cursor: default;
      }
    }

    &:first-child {
      border-radius: $border-radius 0 0 $border-radius;
      margin: 0;
    }

    &:last-child {
      border-radius: 0 $border-radius $border-radius 0;
      margin-left: 0;
    }
  }

  &--padded {
    padding-left: 2px;
  }
}