body {
https://images.cnblogs.com/cnblogs_com/-csdn/1657262/o_2003160349385850b08d626ba.jpg
) fixed;

#home {
opacity: 0.80;
    margin: 0 auto;
    width: 85%;
    min-width: 1050px;
    background-color: #fff;
    padding: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
    box-shadow: 0 2px 6px rgba(100,100,100,.3);
}