.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: none;
  background: #b48c5a;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(180, 140, 90, 0.35);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.back-to-top.show {
  display: inline-flex;
}

@media (max-width: 600px) {
  .back-to-top {
    bottom: 18px;
    right: 18px;
    width: 42px;
    height: 42px;
  }
}