#home {
    margin: 0 auto;
    width: 65%;
    min-width: 950px;
    background-color: rgba(255, 255, 255, 0.51);
    padding: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
    box-shadow: 0 2px 6px rgba(50, 50, 100, 1);
}

body {
background: url(https://www.cnblogs.com/images/cnblogs_com/changjue/1440992/o_w3.jpg) no-repeat fixed;
    background-size: cover;
}