body {
    background-repeat: no-repeat;  
    background: rgba(12, 100, 129, 0)  fixed;
    background-image:url('https://images.cnblogs.com/cnblogs_com/blogs/695707/galleries/2003880/o_210723013455%E5%B1%8F%E5%B9%95%E6%88%AA%E5%9B%BE%202021-07-23%20093438.png');
    background-size: 100%;
    background-repeat: no-repeat;
    font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
    font-size: 12px;
    min-height: 101%;
}

#home {
margin: 0 auto;
opacity: 0.8;
width: 85%;
min-width: 1080px;
background-color: #fff;
padding: 30px;
margin-top: 50px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}