.snowflakes{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden;z-index:0}.snowflake{position:absolute;top:-20px;color:#fff;opacity:.6;animation:snowfall linear infinite}@keyframes snowfall{0%{transform:translateY(-20px) rotate(0);opacity:0}10%{opacity:.6}90%{opacity:.6}to{transform:translateY(100vh) rotate(360deg);opacity:0}}