body {
    font-size:15px;
    padding:0;
    margin:0;
    font-family:"微软雅黑","宋体",Arial;
    background: url("//images2017.cnblogs.com/blog/1272103/201802/1272103-20180202101512281-159866094.jpg"); no-repeat top center fixed;
    min-width:1200px;
}
#home {
    opacity: 0.90;
    filter: alpha(opacity=95);
    box-shadow:0 0 10px #000;
    margin:40px auto;
    width:1200px;
    background:#fff;
    overflow:auto;
    border:solid 1px #fff;
}