.bl-tooltip {
    position: relative;
    cursor: pointer;
}

    .bl-tooltip::after {
        content: attr(data-tooltip);
        position: absolute;
        bottom: 0; /* 버튼 위쪽에 표시 */
        left: 50%;
        transform: translateX(-50%);
        background-color: #333;
        color: #fff;
        padding: 6px 10px;
        border-radius: 5px;
        white-space: nowrap;
        font-size: 13px;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.2s;
        z-index: 10;
    }

    .bl-tooltip:hover::after {
        opacity: 1;
    }