body {
    font-size:14px;/*正文字号*/
    padding:0;
    margin:0;
    font-family:"微软雅黑","宋体",Arial;
    /*背景图片保持静止*/
    background:url(https://images.cnblogs.com/cnblogs_com/blogs/783139/galleries/2320297/o_230621150216_1.jpg)left center / cover no-repeat fixed;
    background-size: cover;
    min-width:1200px;
}
body {
    font-size: 14px !important;
    -webkit-text-size-adjust: none;
    opacity: 0.9;/*正文的透明度*/
}