body {
    color: #000;
    background: url(https://pic3.zhimg.com/v2-5f8050be05f041454865648f5e3d32ba_r.jpg) fixed;
    background-size: cover;
    background-repeat: repeat;
    font-family: "微软雅黑","Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
    font-size: 12px;
    min-height: 101%;
}