.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.7);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-box {
    position: relative;
    max-width: 90%;
}

.popup-box img {
    width: 100%;
    height: auto;
    display: block;
}

.popup-close {
    position: absolute;
    top: -15px;
    right: -15px;
    background: #000;
    color: #fff;
    width: 32px;
    height: 32px;
    text-align: center;
    line-height: 32px;
    font-size: 20px;
    cursor: pointer;
    border-radius: 50%;
}