[data-theme='dark'] {
  .@{popover-prefix-cls} {
    &-inner {
      box-shadow: @br-dropdown-outline, @br-box-shadow-lg;
    }
    &-arrow {
      overflow: unset;
      &-content {
        border: @br-dropdown-border;
      }
    }

    &-placement-top .@{popover-prefix-cls}-arrow,
    &-placement-topLeft .@{popover-prefix-cls}-arrow,
    &-placement-topRight .@{popover-prefix-cls}-arrow {
      &-content {
        border-top-color: transparent;
        border-left-color: transparent;
      }
    }

    &-placement-right .@{popover-prefix-cls}-arrow,
    &-placement-rightTop .@{popover-prefix-cls}-arrow,
    &-placement-rightBottom .@{popover-prefix-cls}-arrow {
      &-content {
        border-top-color: transparent;
        border-right-color: transparent;
      }
    }

    &-placement-bottom .@{popover-prefix-cls}-arrow,
    &-placement-bottomLeft .@{popover-prefix-cls}-arrow,
    &-placement-bottomRight .@{popover-prefix-cls}-arrow {
      &-content {
        border-right-color: transparent;
        border-bottom-color: transparent;
      }
    }

    &-placement-left .@{popover-prefix-cls}-arrow,
    &-placement-leftTop .@{popover-prefix-cls}-arrow,
    &-placement-leftBottom .@{popover-prefix-cls}-arrow {
      &-content {
        border-bottom-color: transparent;
        border-left-color: transparent;
      }
    }
  }
}