#downloadDiv {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, .8);
    background-repeat: no-repeat;
    background-position: top right;
    background-size: 304px;
    display: none
}

.download_ios {
    background-image: url(download_ios.png);
}

.download_android {
    background-image: url(download_android.png);
}

#shareDiv {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, .8);
    background-repeat: no-repeat;
    background-position: top right;
    background-size: 304px;
    display: none
}

.share_icon {
    background-image: url(weixin.png);
}