body {
    background: url(https://cdn.luogu.com.cn/upload/image_hosting/bn7awlj6.png) fixed;
    border: none;
    border-left: 5px solid #f6b73c;
    margin: 0;
    padding-left: 10px;
}

#home {
margin: 0 auto;
opacity: 0.8;
width: 65%;
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);
}