body {
color: #000;
background: url(https://www.cnblogs.com/images/cnblogs_com/hlxcbd/1275994/o_44913427_p0_master1200_3.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 {
filter: alpha(opacity=90);
margin: 0 auto;
width: 65%;
min-width: 950px;
background-color: rgba(255,255,255,0.85);
padding: 30px;
margin-top: 200px;
margin-bottom: 50px;
border: solid 1px #fff;
}