body {
color: #000;
background: url(https://www.cnblogs.com/images/cnblogs_com/pureqh/1352661/o_ac1bbfe8beef1a23f1c9b609d322bad7.jpg
) fixed;
background-size: 100%;
background-repeat: no-repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 101%;
}