.chartist-tooltip
{
    font-size: 12px;
    font-weight: 400;

    position: absolute;
    z-index: 1; 

    display: inline-block;

    padding: 3px 8px;

    text-align: center;
    text-align: center;
    pointer-events: none;

    color: #fff;
    border-radius: 3px;
    background-color: rgba(0, 0, 0, .7);
}