#chartjs-tooltip {
    opacity: 1;
    position: absolute;
    background: rgba(0, 0, 0, .7);
    color: white;
    padding: 3px;
    border-radius: 3px;
    -webkit-transition: all .1s ease;
    transition: all .1s ease;
    pointer-events: none;
    -webkit-transform: translate(-50%, 0);
    transform: translate(-50%, 0);
}
.popover-content{
    color:black !important;
}

.popover-title {
    color: black !important;
}


#chartjs-tooltip.below {
    -webkit-transform: translate(-50%, 0);
    transform: translate(-50%, 0);
}

#chartjs-tooltip.below:before {
    border: solid;
    border-color: #111 transparent;
    border-color: rgba(0, 0, 0, .8) transparent;
    border-width: 0 8px 8px 8px;
    bottom: 1em;
    content: "";
    display: block;
    left: 50%;
    position: absolute;
    z-index: 99;
    -webkit-transform: translate(-50%, -100%);
    transform: translate(-50%, -100%);
}

#chartjs-tooltip.above {
    -webkit-transform: translate(-50%, -100%);
    transform: translate(-50%, -100%);
}

#chartjs-tooltip.above:before {
    border: solid;
    border-color: #111 transparent;
    border-color: rgba(0, 0, 0, .8) transparent;
    border-width: 8px 8px 0 8px;
    bottom: 1em;
    content: "";
    display: block;
    left: 50%;
    top: 100%;
    position: absolute;
    z-index: 99;
    -webkit-transform: translate(-50%, 0);
    transform: translate(-50%, 0);
}