body {
color: #000;
background: url(https://images.cnblogs.com/cnblogs_com/blogs/789949/galleries/2297193/o_230407092034_%E5%90%A73.jpg) fixed;
background-size: 100%;
background-repeat: no-repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 101%;
}
#home { opacity: 0.90;}