body:before {
    background: url(https://images.cnblogs.com/cnblogs_com/blogs/841249/galleries/2448279/t_250618033010_e4c70e8152099cb3f40d7711fcfbfef8.jpg) center/cover no-repeat;
    content: '';
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.5;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    /* -webkit-filter: grayscale(40%);
    -moz-filter: grayscale(40%);
    -ms-filter: grayscale(40%);
    -o-filter: grayscale(40%);
    filter: grayscale(40%);
    filter: gray; */
}

/* #Snow{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    background: rgba(255,255,240,0.1);
    pointer-events: none;
} */




@keyframes spin3D {
    from {
        transform: rotate3d(0.5, 0.5, 0.5, 360deg)
    }

    to {
        transform: rotate3d(0deg)
    }
}

#loading {
    height: 100%;
    background-color: #1d2630;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    overflow: hidden;
    z-index: 99999999
}

.spinner-box {
    width: 300px;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: transparent
}

.leo {
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%
}

.blue-orbit {
    width: 165px;
    height: 165px;
    border: 1px solid #91daffa5;
    animation: spin3D 3s linear .2s infinite
}

.green-orbit {
    width: 120px;
    height: 120px;
    border: 1px solid #91ffbfa5;
    animation: spin3D 2s linear 0s infinite
}

.red-orbit {
    width: 90px;
    height: 90px;
    border: 1px solid #ffca91a5;
    animation: spin3D 1s linear 0s infinite
}

.white-orbit {
    width: 60px;
    height: 60px;
    border: 2px solid #fff;
    animation: spin3D 10s linear 0s infinite
}

.w1 {
    transform: rotate3D(1, 1, 1, 90deg)
}

.w2 {
    transform: rotate3D(1, 2, 0.5, 90deg)
}

.w3 {
    transform: rotate3D(0.5, 1, 2, 90deg)
}