.popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 800px;
    height: 100%; 
    max-height: 800px;
    padding: 0;
    background-color: rgba(0, 0, 0, 0.5); 
    background-size: cover; 
    background-position: center center; 
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    z-index: 9999;
    display: block;
    color: white; 
    display: none;
}

.popup-close {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 17px;
    cursor: pointer;
    background: none;
    border: none;
    color: #fff;
    z-index: 10001;
    font-weight: 700;
    border-radius: 60%;
    background-color: #000;
    width: 25px;
    height: 27px;
    line-height: 20px;
}

.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9998;
}