.snow-container {
    overflow: hidden;
}

.snow {
    display: block;
    position: absolute;
    z-index: 2;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    pointer-events: none;
    -webkit-transform: translate3d(0, -100%, 0);
    transform: translate3d(0, -100%, 0);
    -webkit-animation: snow linear infinite;
    animation: snow linear infinite;
}
.snow.middleground {
    background-image: url(/static/images/snow/01.png);
    -webkit-animation-duration: 40s;
    animation-duration: 40s;
}
.snow.middleground.layered {
    -webkit-animation-delay: 20s;
    animation-delay: 20s;
}
.snow.background {
    background-image: url(/static/images/snow/02.png);
    -webkit-animation-duration: 60s;
    animation-duration: 60s;
}
.snow.background.layered {
    -webkit-animation-delay: 30s;
    animation-delay: 30s;
}

@-webkit-keyframes snow {
    0% {
        -webkit-transform: translate3d(0, -100%, 0);
        transform: translate3d(0, -100%, 0);
    }
    100% {
        -webkit-transform: translate3d(15%, 100%, 0);
        transform: translate3d(15%, 100%, 0);
    }
}

@keyframes snow {
    0% {
        -webkit-transform: translate3d(0, -100%, 0);
        transform: translate3d(0, -100%, 0);
    }
    100% {
        -webkit-transform: translate3d(15%, 100%, 0);
        transform: translate3d(15%, 100%, 0);
    }
}