body{
     // background-image:url(https://images.cnblogs.com/cnblogs_com/MaiJiangDou/1527491/o_bg.jpg);
     // background-attachment:fixed; //设置背景图像是否固定或者随着页面的其余部分滚动
}
#blogTitle{
    background: url();
}
#header {
    background: url(https://images.cnblogs.com/cnblogs_com/MaiJiangDou/1527491/o_bg.jpg)  no-repeat center/cover;
}
#navigator {
    opacity: 0.8;
}
.c_ad_block {
    display: none;
}