#map {
    width:100%;
    height:100%;
    position: relative;
}
#chinaMap {
    width:100%;
    height:100%;
    position: relative;
}
#close {
    position: absolute;
    top: 30px;
    right: 30px;
    background: rgba(0,0,0,0.3);
    color: #999;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
    cursor: pointer;
    z-index: 99999;
    display: none;
}