.close_xmas_popup {
    margin: 0;
    border: none;
    list-style: none;
    box-sizing: border-box;
    color: white;
}
.pop {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index:9999;
}
.pop > span {
    cursor: pointer;
    position: absolute;
    top: 1px;
    right: 1px;
    border-radius: 100px;
    background: #DB0000;
    padding: 3px 0px 0px 10px;
    width: 75px;
    height: 30px;
    font-size: 129%;
}

.overlay {
    background-color: #000000;
    display: block;
    height: 100%;
    left: 0;
    opacity: 0.5;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 9998;
}