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