@include b(tooltip) {
    @include e(popper) {
        &.is-dark {
            max-width:250px;
            padding:8px 10px;
            margin:0;
            text-align:left;
            text-decoration:none;
            background-color: rgba(64, 64, 64, 0.85);
            border-radius:4px;
            box-shadow:0 1px 6px rgba(0, 0, 0, 0.2);
        }

        &[x-placement^=top] .popper__arrow {
            border-top-color: rgba(64, 64, 64, 0.85);
        }
        &[x-placement^=left] .popper__arrow {
            border-left-color: rgba(64, 64, 64, 0.85);
        }
        &[x-placement^=right] .popper__arrow {
            border-right-color: rgba(64, 64, 64, 0.85);
        }
        &[x-placement^=bottom] .popper__arrow {
            border-bottom-color: rgba(64, 64, 64, 0.85);
        }
    }
}