body {
    /*背景图片，方便修改*/
    background: rgba(12, 100, 129, 1) url(https://images.cnblogs.com/cnblogs_com/ioufev/1300676/o_wallhaven-714241.jpg) fixed no-repeat !important;
}

#navigator {
    border-top-left-radius: 7px;
    border-top-right-radius: 7px;
}