
      bottom: 0;
    }

    .tooltip .arrow {
      position: absolute;
      display: block;
      width: 0.8rem;
      height: 0.4rem;
    }

    .tooltip .arrow::before {
      position: absolute;
      content: '';
      border-color: transparent;
      border-style: solid;
    }

    .bs-tooltip-auto[x-placement^='bottom'] .arrow::before,
    .bs-tooltip-bottom .arrow::before {
      bottom: 0;
      border-width: 0 0.4rem 0.4rem;
      border-bottom-color: #000;
    }

    .bs-tooltip-auto[x-placemen