.tooltip {
    background-image: url('../images/tool_tip_icon.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 16px;
    height: 16px;
    display: inline-block;
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #5A5A59;
    color: #ffffff;
    padding: 6px 16px;
    border-radius: 10px;
    font-size: 0.85rem;
    white-space: normal;
    width: 300px;
    visibility: hidden;
}

.tooltip:hover::after {
    visibility: visible;
}