body {
    font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue","Helvetica","Arial",sans-serif;
    font-weight: normal;
    background-color: #f9f9f9;
    background: url(https://images.cnblogs.com/cnblogs_com/blogs/788167/galleries/2290813/o_230322125834_111(1)(1).jpg);
}
#home {
margin: 0 auto;
opacity: 0.8;
width: 65%;
min-width: 1080px;
background-color: #30;
padding: 30px;
margin-top: 50px;
margin-bottom: 50px;
box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
}