html,body{margin:0;padding:0;height:100%;width:100%;background-color:#000;color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.particles{position:absolute;inset:0;pointer-events:none;z-index:1}.particle{position:fixed;width:3px;height:3px;border-radius:50%;bottom:-10px;pointer-events:none;animation:floatUp 15s linear infinite}@keyframes floatUp{0%{transform:translateY(0);opacity:1}to{transform:translateY(-110vh);opacity:0}}