#home {
    background-color:rgba(255,255,255,1);   /*博客主页主体框的颜色*/
}
body {
    background: rgba(12, 100, 129, 0.8) url('https://files-cdn.cnblogs.com/files/One-Orange/thumbnail.gif') fixed no-repeat;
    background-position: 50% 5%;
    background-size: cover;
}