#home {
opacity: 0.80;
margin: 0 auto;
width: 75%;
min-width: 950px;
background-color: #fff;
padding: 30px;
margin-top: 200px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}
body {
color: #000;
background: url(https://images2015.cnblogs.com/blog/969197/201703/969197-20170325160900815-1058599404.jpg) fixed;
background-size: 100%;
background-repeat: no-repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 101%;
}