webapp/src/components/Editor/TopicSelect/TopicSelect.module.scss

.selectedItem {
  cursor: pointer;

  &.mainTopic {
    cursor: default;

    &,
    + :global(.solid-select-multi-value-remove) {
      color: #ccc;
    }

    &:before {
      background: #000;
      content: '';
      height: 100%;
      left: 0;
      position: absolute;
      top: 0;
      width: 100%;
      z-index: -1;
    }
  }
}