body {
color: #000;
background: url(https://images.cnblogs.com/cnblogs_com/luyouqi233/1116987/o_24340a1d8d817105b05f7f6a7bd6321e.jpg) fixed;
background-size: 2000px;
background-repeat: repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 101%;
}
#home {
opacity: 0.80;
margin: 0 auto;
width: 40%;
min-width: 950px;
background-color: #fff;
padding: 30px;
margin-top: 30px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}