ws-react-menu-tree/src/menuTree.scss

$gray-title: #8b8b90;
$white: #fff;

.menu-tree {
  width: 100%;

  &__item-wrap {
    border-bottom: 1px solid $gray-title;

    &:last-of-type {
      border: 0;
    }
  }

  &__item {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 6px;
    font-size: 14px;

    &:hover,
    &--select {
      background: $gray-title;
      color: $white;

      .material-icons {
        color: $white !important;
      }
    }

    .material-icons {
      position: relative;
      top: -2px;
      height: 10px !important;
      min-height: 10px !important;
      color: $gray-title !important;
    }
  }

  &__item-child-wrap {
    padding-left: 12px;
  }

  &__content-panel {
    overflow: auto;
  }
}