.tooltip-inner {
    background-color: #3E5357 !important;
    color: #fff;
}

.bs-tooltip-top .arrow::before, .bs-tooltip-auto[x-placement^="top"] .arrow::before {
    border-top-color: #3E5357;
}

.bs-tooltip-right .arrow::before, .bs-tooltip-auto[x-placement^="right"] .arrow::before {
    border-right-color: #3E5357;
}


.bs-tooltip-bottom .arrow::before, .bs-tooltip-auto[x-placement^="bottom"] .arrow::before {
    border-bottom-color: #3E5357;
}


.bs-tooltip-left .arrow::before, .bs-tooltip-auto[x-placement^="left"] .arrow::before {
    border-left-color: #3E5357;
}