body {
    color: #333;
    background: url(https://img2018.cnblogs.com/blog/1920048/202002/1920048-20200203165853548-1972156806.png) fixed;
}
/* 定制公告栏时钟位置 */
#clockdiv {
    /* left, center, right */
    text-align: center;
}