body{
    color: #000;
    background: #fff;
    font-family: Verdana,Arial,Helvetica,sans-serif;
    font-size: 12px;
    min-height: 101%;
    background: url(https://images.cnblogs.com/cnblogs_com/esinSha/1639690/o_2001310909395cd154cef1b12.jpg) ;
     background-position:center;
    background-size: cover;
    background-repeat:no-repeat;
    background-attachment:fixed;
}

#navigator {
    opacity: 0.7;
    background-color: #333;
    height: 60px;
    clear: both;
    margin-top: 60px;
    position: relative;
}

#main {
    opacity: 0.8;
    min-width: 980px;
    text-align: left;
    clear: both;
    background: #fff;
}

.wenzi{
    text-align: center;
    font-size:15px;
}