body {
    font-size: .9em;
    font-family: Verdana,Geneva,Arial,Helvetica,sans-serif;
    margin: 0;
    word-wrap: break-word;
    background: url(https://images.cnblogs.com/cnblogs_com/-lmg-/1638582/o_2001280552395185E81D-F3DC-4A3E-927F-32412A16923F.jpg);
    background-size: cover;
    background-attachment:fixed;
    background-position:center;
    background-repeat:no-repeat;
}

#home {
margin: 0 auto;
opacity: 0.9;
width: 65%;
min-width: 1080px;
background-color: #fff;
padding: 30px;
margin-top: 50px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}