element.style {
}
html, body {
    margin: auto;
    font-size: 12px;
opacity: 0.95;
    color: #000;
    line-height: 150%;
}
body.has-navbar {
    background: url(https://images.cnblogs.com/cnblogs_com/blogs/664603/galleries/1929960/o_210208011004%E8%83%8C%E6%99%AF.jpg) fixed;
}
/* 定制公告栏时钟位置 */
#clockdiv {
    /* left, center, right */
    text-align: center;
}