#snow-container{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:9999;overflow:hidden}
.snowflake{position:absolute;background:#fff;border-radius:50%;opacity:.8;pointer-events:none}
@keyframes fall-0{0%{transform:translate3d(0,-100%,0);opacity:0}10%{opacity:1}100%{transform:translate3d(-20px,100vh,0);opacity:.5}}
@keyframes fall-1{0%{transform:translate3d(0,-100%,0);opacity:0}10%{opacity:1}100%{transform:translate3d(20px,100vh,0);opacity:.5}}
@keyframes fall-2{0%{transform:translate3d(0,-100%,0);opacity:0}10%{opacity:1}100%{transform:translate3d(-10px,100vh,0);opacity:.5}}
@keyframes fall-3{0%{transform:translate3d(0,-100%,0);opacity:0}10%{opacity:1}100%{transform:translate3d(10px,100vh,0);opacity:.5}}