#popup {
    display: none;
    position: fixed;
    left:0;
    top:0;
    right:0;
    bottom:0;
    z-index:10000;
    background:rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.pop_close {
    width: 100%;
    height: 30px;
    line-height: 30px;
    text-align: center;
    background: linear-gradient(#3a3a3a 0%, #2a2a2a 100%);
    position: relative;
}