.snowflake{position:fixed;top:-10px;background:#fff;border-radius:50%;opacity:.8;pointer-events:none;z-index:1000;animation:fall linear infinite}@keyframes fall{0%{transform:translateY(-10vh) translateX(0)}to{transform:translateY(105vh) translateX(15vw)}}.snowflake.medium{width:4px;height:4px;animation-duration:10s}.snowflake.small{width:2px;height:2px;animation-duration:15s;opacity:.6}.snowflake.large{width:6px;height:6px;animation-duration:8s}