#three-bg{
position:fixed;
inset:0;
z-index:-2;
width:100%;
height:100%;
}
.particles{
position:fixed;
inset:0;
pointer-events:none;
z-index:-1;
overflow:hidden;
}
.particles span{
position:absolute;
bottom:-10px;
width:4px;
height:4px;
border-radius:50%;
background:#5eead4;
animation:float 8s linear infinite;
opacity:.7;
}
@keyframes float{
from{transform:translateY(0)}
to{transform:translateY(-110vh)}
}