<style type="text/css">

body{background:#111}

.snow-container{position:fixed;width:100%;max-width:100%;z-index:99999;pointer-events:none;overflow:hidden;top:0;height:100%}

.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.foreground{background-image:url("https://dl6rt3mwcjzxg.cloudfront.net/assets/snow/snow-large-075d267ecbc42e3564c8ed43516dd557.png");-webkit-animation-duration:15s;animation-duration:10s}

.snow.foreground.layered{-webkit-animation-delay:7.5s;animation-delay:7.5s}

.snow.middleground{background-image:url(https://dl6rt3mwcjzxg.cloudfront.net/assets/snow/snow-medium-0b8a5e0732315b68e1f54185be7a1ad9.png);-webkit-animation-duration:20s;animation-duration:15s}

.snow.middleground.layered{-webkit-animation-delay:10s;animation-delay:10s}

.snow.background{background-image:url(https://dl6rt3mwcjzxg.cloudfront.net/assets/snow/snow-small-1ecd03b1fce08c24e064ff8c0a72c519.png);-webkit-animation-duration:25s;animation-duration:20s}

.snow.background.layered{-webkit-animation-delay:12.5s;animation-delay:12.5s}

@-webkit-keyframes snow{0%{-webkit-transform:translate3d(0,-100%,0);transform:translate3d(0,-100%,0)}100%{-webkit-transform:translate3d(5%,100%,0);transform:translate3d(5%,100%,0)}}

@keyframes snow{0%{-webkit-transform:translate3d(0,-100%,0);transform:translate3d(0,-100%,0)}100%{-webkit-transform:translate3d(5%,100%,0);transform:translate3d(5%,100%,0)}}

</style>

<div class='snow-container'>

        <div class='snow foreground'></div>

        <div class='snow foreground layered'></div>

        <div class='snow middleground'></div>

        <div class='snow middleground layered'></div>

        <div class='snow background'></div>

        <div class='snow background layered'></div>

</div>