body {
    font-size: 16px;
    padding: 0;
    margin: 0;
    background: #e6e6e6 url('https://images.cnblogs.com/cnblogs_com/hzoier/953570/o_d850075d26045cd2.png') no-repeat top center fixed;
    min-width: 800px;
    background-size: cover;
}
#home {
    opacity: 0.85;
    filter: alpha(opacity=95);
    box-shadow: 0 0 10px lightcyan;
    margin: 70px auto;
    width: 1200px;
    background: #fff;
    overflow: auto;
    border: solid 1px #fff;
}