#scrollToTopBtn {
  position: fixed;
  bottom: 40px;
  right: 40px;
  z-index: 100;
  width: 50px;
  height: 50px;
  font-size: 24px;
  background-color: #0d47a1;
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

#scrollToTopBtn:hover {
  background-color: #1565c0;
  transform: scale(1.1);
}