.particle-layer{position:absolute;top:0;left:0;width:100%;height:100%;background:transparent;pointer-events:none}.particle{position:absolute;background:white;border-radius:50%;animation:float 20s linear infinite;opacity:0}@keyframes float{0%{transform:translateY(100vh) scale(0);opacity:0}50%{opacity:1}to{transform:translateY(-100vh) scale(1);opacity:0}}