.acs-has-tooltip {
    position: relative;
}

.acs-has-tooltip .acs-tooltip {
    visibility: hidden;
    background: #0073aa;
    color: #fff;
    text-align: center;
    padding: 5px 8px;
    border-radius: 4px;
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    font-size: 12px;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s;
}

.acs-has-tooltip:hover .acs-tooltip {
    visibility: visible;
    opacity: 1;
}