body {
color: #000;
background: url(https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1555417919395&di=403586dc34bf2bd7160de1b4bdfe5d9a&imgtype=0&src=http%3A%2F%2Fwww.cnblogs.com%2Fimages%2Fcnblogs_com%2Fwangyang0210%2F1279677%2Fo_%25e6%259c%2588%25e4%25ba%25ae.jpg) fixed;
background-size: 100%;
background-repeat: no-repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 101%;
}