#go-top-btn {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 150px;
  height: 150px;
  border: none;
  padding: 0;
  border-radius: 50%;
  background: none;
  cursor: pointer;
  display: none;
  z-index: 999;
  transition: opacity 0.3s ease, transform 0.2s ease;
}

#go-top-btn img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#go-top-btn:hover img {
  transform: scale(1.15);
}