body{    
    background-color: #000000;
    opacity: 1;
    background-image:  linear-gradient(#1a1a1a 2px, transparent 2px), linear-gradient(90deg, #1a1a1a 2px, transparent 2px), linear-gradient(#1a1a1a 1px, transparent 1px), linear-gradient(90deg, #1a1a1a 1px, #000000 1px);
    background-size: 50px 50px, 50px 50px, 10px 10px, 10px 10px;
    background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
}
.navbar{
    /* background-color: #000000; */
}
/* 右侧锚点列表 */
.myOl{
    position:fixed;
    z-index:1;
    right:10px;
    top:200px;
    background:#ffffff;
    font-size:18px;
    font-weight:bold;
    padding:15px 10px;
}
.myOl li{
    margin-bottom:5px;
}
#home{
    /* background-color: #000000; */
    position: relative;
    z-index: 1;    
}
/* 背景小球画布 */
#mycan{
    position: absolute;
    z-index: 0;
    opacity: 0.6;
}