#sfe-container{
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.sfe-flake{
  position: absolute;
  top: -30px;
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  text-shadow: 0 0 6px rgba(255,255,255,0.9);
  animation: sfe-fall linear infinite;
}

@keyframes sfe-fall{
  0%{transform:translateY(0) rotate(0deg);}
  100%{transform:translateY(110vh) rotate(360deg);}
}

.sfe-drift{
  animation-name: sfe-fall-drift;
}

@keyframes sfe-fall-drift{
  0%{transform:translateY(0) translateX(0);}
  50%{transform:translateY(55vh) translateX(20px);}
  100%{transform:translateY(110vh) translateX(0);}
}