.clouds:nth-child(2) {
--scale: 2;
top: 180px;
left: 28px;
z-index: 2;
}
.cloud {
animation: scale 3s infinite alternate;
}
@keyframes scale {
from {
transform: scale(var(--scale));
}
to {
transform: scale(calc(var(--scale) / 2));
}
}