.snow {
    background-image:
        url(/static/img/snow/snow1.png),
        url(/static/img/snow/snow2.png);
    animation: snow 30s linear infinite;
}

.snowframe {
    opacity: 1.0;
    background-color: #282828;
}

@keyframes snow {
    0% {background-position: 0px 0px, 0px 0px, 0px 0px;}
    100% {background-position: 500px 1000px, 400px 400px, 300px 300px}
}