
  width: 18px;
  height: 18px;
  fill: #fff;
  transition: transform 0.3s ease;
}

#back-to-top:hover {
  background-color: #006fa6;
  transform: translateY(-3px) scale(1.05);
}

#back-to-top:hover svg {
  transform: translateY(-1px);
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(71, 196, 241, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(71, 196, 241, 0); }
  100% { box-shadow: 0 0 0 0 rgba(71, 196, 241, 0); }
}

#back-to-top.show {
  animation: pulse 2s infinite;
}

@media (max-width: 768px) {
  #ba