#home {
    margin: 0 auto;
    width: 90%;
    min-width: 950px;
    background-color: transparent;
    padding: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
    box-shadow: 0 2px 6px rgba(100, 100, 100, 0.3);
<canvas id="c_n9" width="1920" height="990" style="position: fixed; top: 0px; left: 0px; z-index: -1; opacity: 0.5;"></canvas>
<script src="https://files.cnblogs.com/files/jingmoxukong/canvas-nest.min.js"></script>
}
body {   
color: #000;
background: url() fixed;
background-color: transparent;
background-size: 100% 125%; 
background-repeat: no-repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 100%;
}