.main_notice_pop .btn_close_100 {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 9999;
    color: #fff;
    background: transparent;
    width: 30px;
    height: 30px;
    text-align: center;
    font-size: 26px;
    font-weight: 600;
}
.main_notice_pop span{
    font-size: 15px;
}