body {
color: #000;
background:url(https://images.cnblogs.com/cnblogs_com/redfoxatasleep/1601892/o_191128025209wgQX0tMoZvA.jpg) fixed;
background-position:center;
background-size:cover;
background-repeat: no-repeat;
}

#home {
opacity: 0.80;
margin: 0 auto;
width: 85%;
min-width: 950px;
padding: 30px;
margin-top: 30px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}