body {
    color: #000;
    background: #fff;
    font-family: Verdana,Arial,Helvetica,sans-serif;
    font-size: 12px;
    min-height: 101%;
    background-image:url(https://images.cnblogs.com/cnblogs_com/tmblb/1643043/o_200206135644showgaze_pb_02.png);
    background-repeat:no-repeat;
    background-attachment:fixed;
    background-position:center;
}

#main{
opacity:0.95;
}