.tooltip-wrapper {
    position: relative;
    display: inline-block;
}

.tooltip-wrapper span {
    visibility: hidden;
    position: absolute;
    width: 220px;
    bottom: 100%;
    left: 50%;
    margin-left: -110px;
    background-color: #363636;
    color: #fff;
    padding: 5px;
    border-radius: 6px;
    z-index: 1000;
    font-size: 14px;
}

    .tooltip-wrapper span::after {
        content: "";
        position: absolute;
        top: 100%;
        left: 50%;
        margin-left: -5px;
        border-width: 5px;
        border-style: solid;
        border-color: #555 transparent transparent transparent;
    }

.tooltip-wrapper:hover span {
    visibility: visible;
}