.rf-wrapper {
    position: relative;
    display: inline-block;
    cursor: help;
    border-bottom: 1px dotted #105289;
    color: #105289;
    font-weight: bold;
}

.rf-tooltip {
    /* Cache et sort la date du flux normal pour éviter qu'elle soit collée */
    display: none;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: #fff;
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 11px;
    white-space: nowrap;
    z-index: 999;
}

.rf-wrapper:hover .rf-tooltip {
    display: block;
}

/* La petite flèche */
.rf-tooltip::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border: 5px solid transparent;
    border-top-color: #333;
}