.popup-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999; 
    justify-content: center;
    align-items: center;
}

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

.popup-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.close-btn {
    position: absolute;
    top: -15px;
    right: -15px;
    font-size: 60px;
    font-weight: lighter;
    color: #fff;
    background-color: #333;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    text-align: center;
    line-height: 22px;
    cursor: pointer;
    border: 1.5px solid #fff;
    transition: 0.3s;
}

.close-btn:hover {
    background-color: #00000;
}